61. Science In India: History Of Mathematics: Indian Mathematicians And Astronomers, Describes Indian mathematicians such as Aryabhatta who modelled the solar system, Bhaskar, Varahamira, and others who made important contributions in the fields of trigonometry, algebra, and classical analysis. http://members.tripod.com/~INDIA_RESOURCE/mathematics.htm

Get Five DVDs for $.49 each. Join now. Tell me when this page is updated SOUTH ASIAN HISTORY Pages from the history of the Indian sub-continent: Science and Mathematics in India History of Mathematics in India In all early civilizations, the first expression of mathematical understanding appears in the form of counting systems. Numbers in very early societies were typically represented by groups of lines, though later different numbers came to be assigned specific numeral names and symbols (as in India) or were designated by alphabetic letters (such as in Rome). Although today, we take our decimal system for granted, not all ancient civilizations based their numbers on a ten-base system. In ancient Babylon, a sexagesimal (base 60) system was in use. The Decimal System in Harappa In India a decimal system was already in place during the Harappan period, as indicated by an analysis of Harappan weights and measures. Weights corresponding to ratios of 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10, 20, 50, 100, 200, and 500 have been identified, as have scales with decimal divisions. A particularly notable characteristic of Harappan weights and measures is their remarkable accuracy. A bronze rod marked in units of 0.367 inches points to the degree of precision demanded in those times. Such scales were particularly important in ensuring proper implementation of town planning rules that required roads of fixed widths to run at right angles to each other, for drains to be constructed of precise measurements, and for homes to be constructed according to specified guidelines. The existence of a gradated system of accurately marked weights points to the development of trade and commerce in Harappan society.

62. Trigonometry Worksheets! Welcome to our trigonometry worksheet section. Comments? Every time you clickto create a worksheet a New worksheet is created! trigonometry http://www.edhelper.com/trigonometry.htm

Return to edHelper.com Welcome to our trigonometry worksheet section. Comments? Every time you click to create a worksheet a New worksheet is created! Trigonometry Radian Measure Arc Length Coordinate System Trigonometric Functions on a General Angle ... Back to the Math Table Of Contents Radian Measure A radian is a unit of angle measure. The radian measure of a central angle of a circle compares the length of its intercepted arc with the length of the radius of the circle. One radian is the measure of a central angle of a circle that intercepts an arc whose length equals the radius of the circle. Given a central angle q in radians, s represents the length of its intercepted arc, with radius r: q s r or s = r q To change from degrees to radians: Multiple the number of degrees by To change from radians to degrees: Multiple the number of radians by Build Worksheet Arc Length Use the s = r q equation to solve these word problems. Example: The minute hand of a clock is 12 cm long. How far does the tip of the hand move in 10 minutes? To use the s = r q equation, first convert 60

63. Math Online Live Instructor And Tutor Live online classes in calculus, trigonometry, and basic math. http://mathtoons.com/

Welcome to Math Courses Completely Online. College Credit Available. You have the following services offered: Join the Instructor's Live Online Office Hours Use 'Tutor Center' to speak with a mathematics instructors via a toll-free phone number, Watch video lectures and complete assignments on a self-paced basis. Economical: Choose a math class, purchase an enrollment code and start immediately; the e-textbook is completely online and is purchased during the registration process. All courses are self-contained. Get an Access Code With Access Code Mathtoons Demo. Awards ... Required Plug-ins Stay Informed, Join the Math/Science Online Options, News Letter Email: tutor help, math tutorial,online, algebra tutor, stats, demo,formula, distance, inverse, derivative, Integral, function, continuous, Integration, College Credit , number, equation, business, applied problems, calculus, beginning algebra, fraction, trigonometry, problem, imaginary, anova, regression, intermediate algebra, home schooling, e-textbook , unit, vector, square root, radical, linear, converter, prime number, finite, ratio, probability, statistics, calculate, parts, calculator, statistic, calculus, circle, trigonometry, differential equations, fractal, word problems, homework, learn free calculus, learning maths, college, Prealgebra, precalculus, mathematics, Pythagorean Theorem, polynomials, Instructor,Live Online, Office Hours,Tutor Center,mathematics instructors,toll-free, Watch, video lectures, complete assignments, self-paced basis, Economical

64. TheMathPage  Topics In Trigonometry 14. Functions of an Acute Angle. 15. trigonometry of Right Triangles. 16. The IsoscelesRight Triangle. Arc Length. 16. Analytic trigonometry The Unit. 16. Circle. http://www.themathpage.com/aTrig/trigonometry.htm

Home These pages are intended to be seen in Garamond THE TOPICS Ratio and Proportion Radicals: Rational and Irrational Numbers The Pythagorean Theorem ... Home Questions or comments? E-mail: Hello@themathpage.com . Please do not sent attachments.

65. Calculator Includes arithmetic, square root, exponent, natural log, trigonometry functions. Also, has parenthesis and memory features. http://members.tripod.com/~rwedge/calculator.html

Scientific Calculator

66. Table Of Contents Trigonometry 4/e http://www.mathtv.com/Trig/pages/toc.htm

67. The U Of O Physics Student Page Vectors trigonometry. The following is a list of problems. To accessa problem, click on its title Converting from Polar to Cartesian http://zebu.uoregon.edu/~dmason/probs/bas/trig.html

The following is a list of problems. To access a problem, click on its title: Converting from Polar to Cartesian Coordinates Adding Vectors Hexagon Inscribed in a Circle The Earth Curving Away From You ... Surveying with a Protractor The U of O Physics Student Page last update: September 25, 1995 dmason@zebu.uoregon.edu

68. Mathematics Reference trigonometry identities and calculus rules for integration and differentiation. http://www.alcyone.com/max/reference/maths/index.html

Mathematics reference Ma Maths A mathematics reference for students and teachers. Conventions. Mathematics reference: Notation A unified mathematical notation used throughout these pages. Ma Trigonometric identities and properties. Mathematics reference: Trigonometric identities Various identities and properties essential in trigonometry. Ma Mathematics reference: Hyperbolic trigonometry identities Various identities essential in hyperbolic trigonometry. Ma Differential and integral calculus. Mathematics reference: Limits Properties of limits. Ma Mathematics reference: Rules for differentiation Essential rules for differentiation. Ma Mathematics reference: Rules for integration Essential rules for integration. Ma Vectors and matrices. Mathematics reference: Rules for vectors Basic properties of vectors. Ma Mathematics reference: Rules for matrices Basic properties of matrices. Ma Navigation. Erik Max Francis TOP Welcome to my homepage. e Reference UP A technical reference. Re Mathematics reference: Notation START A unified mathematical notation used throughout these pages. Ma Feedback CONTACT How to send feedback on these pages to the author.

69. Math.com Homework Help Trigonometry Search, More trigonometry coming soon! Be sure to check out our special CD trigonometryoffer below. Tables Formulas, Calculators. Functions. ·, Overview. http://www.math.com/homeworkhelp/Trigonometry.html

Home Teacher Parents Glossary ... Email this page to a friend Select Subject -Select Subject Basic Math Everyday Math Pre-Algebra Algebra Geometry Trigonometry Statistics Calculus Advanced Topics Others Resources Cool Tools References Test Preparation Study Tips ... Wonders of Math Search More Trigonometry coming soon! Be sure to check out our special CD Trigonometry offer below. Calculators Functions Overview The functions Unit modes - degree, radian, grad ... Legal Notices . Please read our Privacy Policy

70. History Of Mathematics - Table Of Contents Topics include background in Babylonian, Euclid, Al'Khwarizmi, pi, and trigonometry. Also has recreations and java chat. http://members.aol.com/bbyars1/contents.html

And Insights into the History of Mathematics Table of Contents Prologue The First Mathematicians The Most Famous Teacher Pi: It Will Blow Your Mind ... Comments and Notices

71. NAVIGATION AND TRIGONOMETRY The following is a short review of spherical trigonometry, celestial navigation,and great circle sailing. NAVIGATION trigonometry INDEX. http://www.angelfire.com/nt/navtrig/

INTRODUCTION AND INDEX - - The following is a short review of spherical trigonometry, celestial navigation, and great circle sailing. The solution of the navigation triangle (section C) can be used for great circle course determination and for determining a location of the observer from astronomical observations. There are many ways to solve spherical triangles, but my interest in this discussion are those methods that can be used on a calculator without the need of special tables. NAVIGATION TRIGONOMETRY INDEX The rhumb line, ( graphical Mercator sailing and middle latitude sailing ) Calculated Mercator sailing Definitions, the spherical triangle The right spherical triangle ... The oblique spherical triangle C1 The navigation triangle using the law of cosines C2 The navigation triangle using the Ageton method C3 The navigation triangle using Napiers analogies C4 The navigation triangle using the no-name method Approximation methods for great circle sailing Graphical great circle sailing Calculated great circle sailing ... Selected Navigation Stars EXTERNAL LINKS U. S. NAVAL OBSERVATORY

72. The Pagan Parenting Page trigonometry is used in this unusual activity for Midsummer time. http://www.jazgordon.com/pparent/lithaact.htm

Home Page Not Found. Please start at the top and try again. If you reached this error from a page in the Pagan Parenting Page, please email me and let me know where you found the bad link! Don't forget to visit the Pagan Parenting Page Store I don't necessarily agree or disagree with anything on these pages that isn't directly credited to me! What's right for me may not be right for you, and vice versa, so I try to include as many different viewpoints as I can. If you disagree with something posted on the Pagan Parenting Page, please submit an alternate viewpoint! Jaz Gordon dba Cat's Cradle Web Productions 504 visits (4 today, 504 this week)

73. Trigonometry -- From MathWorld trigonometry, The study of angles and of the angular relationshipsof planar and threedimensional figures is known as trigonometry. http://mathworld.wolfram.com/Trigonometry.html

Geometry Trigonometry General Trigonometry Trigonometry The study of angles and of the angular relationships of planar and three-dimensional figures is known as trigonometry. The trigonometric functions (also called the circular functions ) comprising trigonometry are the cosecant cosine cotangent secant ... sine , and tangent . The inverses of these functions are denoted , and . Note that the notation here means inverse function not f to the -1 power The trigonometric functions are most simply defined using the unit circle . Let be an angle measured counterclockwise from the x -axis along an arc of the circle . Then is the horizontal coordinate of the arc endpoint, and is the vertical component. The ratio is defined as . As a result of this definition, the trigonometric functions are periodic with period , so where n is an integer and func is a trigonometric function. A right triangle has three sides, which can be uniquely identified as the hypotenuse , adjacent to a given angle , or opposite . A helpful mnemonic for remembering the definitions of the trigonometric functions is then given by "oh, ah, oh-ah," From the Pythagorean theorem Therefore, it is also true that

74. SCORE Mathematics Lessons . CA StandardsLinks. NCTM Standards Links. Noon Project Revisited 2200 years......SCORE Mathematics. trigonometry. Lesson Title/ http://score.kings.k12.ca.us/trigonometry.html

SCORE Mathematics Trigonometry Lesson Title/Description CA Standards Links NCTM Standards Links Noon Project Revisited 2200 years ago, Eratosthenes calculated the circumference of the Earth from the measurements of two shadows (in a well and from a pole). The Noon Project is an annual Internet event for schools to team up and make their own measurements. Using the reported 1995 shadow measurements, you can perform the calculations to determine the diameter of the Earth. Suggestions or comments to Jim Shaver Last updated June 1, 2000

75. School Principals Guide To Student Math Improvement A free tutorial that explains difficult algebra, trigonometry and calculus concepts to beginning middle/high school students in a simplified way that they can understand and use. http://members.tripod.com/learnmath/

var TlxPgNm='index'; School Principals Guide to Student Math Improvement Invitation to Mathematics is Math for School Principals. It is an algebra and college prep math tutoring program that extracts clean, fresh, authoritative algebra and math concepts and explains them in a made-simple way. School Principals Guide to Student Math Improvement As a School Principal you are looked upon for leadership to show and direct teachers how to be accountable for high academic standards. Today, any School Principal attempting to meet this difficult goal faces new questions and challenges. To help answer those questions the Educational Research Institute is pleased to bring you a breakthrough Professional Development Mathematics and Science Support Training Program part of the Math 2002' teacher training program, that, for the first time, gives teachers and administrators, an understandable, bare facts, overview of the math knowledge necessary to determine where to take your students to raise the schools academic levels. The use of this breakthrough program is intended to save your school considerable time and money. Why is this Guide Important to School Principals?

76. SCORE Math: Trigonometry Standards For 8-12 trigonometry. trigonometry uses the techniques that students havepreviously learned from the study of algebra and geometry. The http://score.kings.k12.ca.us/standards/trigonometry.html

SCORE Mathematics California's Mathematics Standards 8-12 TRIGONOMETRY Trigonometry uses the techniques that students have previously learned from the study of algebra and geometry. The trigonometric functions studied are defined geometrically rather than in terms of algebraic equations. Facility with these functions as well as the ability to prove basic identities regarding them is especially important for students intending to study calculus, more advanced mathematics, physics and other sciences, and engineering in college. Students understand the notion of angle and how to measure it, in both degrees and radians. They can convert between degrees and radians. Noon Project Revisited Students know the definition of sine and cosine as y- and x- coordinates of points on the unit circle and are familiar with the graphs of the sine and cosine functions. Students know the identity cos x ) + sin x 3.1 Students prove that this identity is equivalent to the Pythagorean theorem (i.e., students can prove this identity by using the Pythagorean theorem and, conversely, they can prove the Pythagorean theorem as a consequence of this identity). 3.2 Students prove other trigonometric identities and simplify others by using the identity cos

77. Thabit Gives information on background and contributions to noneuclidean geometry, spherical trigonometry, number theory and the field of statics. Was an important translator of Greek materials, including Euclid's Elements, during the Middle Ages. http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Thabit.html

Al-Sabi Thabit ibn Qurra al-Harrani Born: 826 in Harran, Mesopotamia (now Turkey) Died: 18 Feb 901 in Baghdad, (now in Iraq) Click the picture above to see a larger version Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Thabit ibn Qurra was a native of Harran and a member of the Sabian sect. The Sabian religious sect were star worshippers from Harran often confused with the Mandaeans (as they are in [1]). Of course being worshipers of the stars meant that there was strong motivation for the study of astronomy and the sect produced many quality astronomers and mathematicians. The sect, with strong Greek connections, had in earlier times adopted Greek culture, and it was common for members to speak Greek although after the conquest of the Sabians by Islam, they became Arabic speakers. There was another language spoken in southeastern Turkey, namely Syriac, which was based on the East Aramaic dialect of Edessa. This language was Thabit ibn Qurra's native language, but he was fluent in both Greek and Arabic. Some accounts say that Thabit was a money changer as a young man. This is quite possible but some historians do not agree. Certainly he inherited a large family fortune and must have come from a family of high standing in the community.

78. The JavaScript Source: Miscellaneous: Trigonometry Ratios Home Miscellaneous trigonometry Ratios These are trigonomic ratios for angles upto 360 degrees. TAN. The JavaScript Source Miscellaneous trigonometry Ratios http://javascript.internet.com/miscellaneous/trigonomic-ratios.html

Home Miscellaneous Trigonometry Ratios These are trigonomic ratios for angles up to 360 degrees. Useful not only for the ratios, but for beginner scripters as well. Highly configurable. SIN COS TAN The JavaScript Source: Miscellaneous: Trigonometry Ratios Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Command-s). The script is yours!!! Did you use this script? Do you like this site? Please link to us! Alt Text Sign up for the JavaScript Weekly Text HTML We'll send this script to you! (just click "Send it!" once!) Contact Us! JavaScript Forum Submit Your Script! Legal Notices ... Permissions

79. Homeschooling, Unschooling this site offers not only information for new homeschoolers, but some great ideas to get your child interested in educational subjects; such as trigonometry by using K'nex. A list of book stores for the home schooler is also provided. http://www.smokylake.com/Christy/homeschool.htm

Welcome to the Homeschool Section of my garden.... Information about homeschooling.... FAQ about Homeschooling and Socialisation Advice to new homeschoolers Advice to the parents of new homeschoolers Education Quotes Ideas for homeschoolers.... An unschooler studies math Trigonometry using K'nex Using mythology in writing Random thoughts and questions ... Buy books from independent bookstores This page is created by me, Christy. I spent six years in school and then six years homeschooling. I have now completed a three year degree in political studies, and am graduating with distinction. Since starting university, I've wondered whether I can still call myself a homeschooler, or whether homeschooling ends when one "graduates from highschool". I'm now convinced that homeschooling doesn't end. It can - and should - be a lifestyle. Reading, studying, learning, questioning, challenging are going to be part of my life forever, I hope. I create this homeschooling section of my webpage with the hope of inspiring and encouraging other homeschoolers. Journal entries...

80. Complex Numbers And Trigonometry Complex Numbers and trigonometry Revised Edition by It presents an innovativeintroduction to trigonometry through the use of complex numbers. http://www.thiel.edu/mathproject/CNAT/Default.htm

Dedication Table of Contents Preface Chapter I ... PDF Version Complex Numbers and Trigonometry Revised Edition by Abraham P. Hillman University Of New Mexico Gerald L. Alexanderson Santa Clara University Mervin E. Newton Thiel College INTERACTIVE VERSION The Original Edition of this text is still available. This text has been placed on the WWW as a public service by the Department of Mathematics and Computer Science of Thiel College . It presents an innovative introduction to trigonometry through the use of complex numbers. The text is available in two formats. This, the interactive version, is intended to be read on the computer. There is also a PDF version which is more suitable for printing. All references in the interactive version to other parts of the text are links to the other parts. If you follow one of these links, use the BACK command on your browser to return to your starting point. Dedication Table of Contents Preface Chapter I ... PDF Version For other works by one or more of these authors try Algebra Through Problem Solving An Introduction to Programming the HP 48G/48GX Calculator and Abstract Algebra Return to Thiel Useful Links page.

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