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Sine

en.wikipedia.org/wiki/Sine

In mathematics, the sine is a trigonometric function of an angle. The sine of an acute angle is .... In trigonometry, a unit circle is the circle of radius one centered at the origin (0, 0) in the C...

The birth of trigonometry - UALR

ualr.edu/lasmoller/trig.html

The complex origins of trigonometry are embedded in the history of the ... The earliest uses of trigonometric functions were related to the chords of a circle, and  ...

calculus - Discovery of Sine and Cosine - History of Science and ...

hsm.stackexchange.com/questions/2148/discovery-of-sine-and-cosine

Apr 10, 2015 ... Discovery of Sine and Cosine of an angle, the intuition behind it is ... The only trigonometric function was the chord c h d x = 2 sin ⁡ ( x / 2 ) .

The Story Of Sine | My Dominant Hemisphere

mydominanthemisphere.wordpress.com/2009/08/27/the-story-of-sine/

Aug 27, 2009 ... I've been studying mathematics lately and really enjoying it. Here's an interesting story about the history of the trigonometric function, 'sine'.

Sines - Clark University

www2.clarku.edu/~djoyce/trig/sines.html

In the section on trigonometric functions, we'll define sines for arbitrary angles. A sine is ... This word history for sine is interesting because it follows the path of ...

History of Trigonometry Outline

aleph0.clarku.edu/~djoyce/ma105/trighist.html

The modern trigonometrical functions are sine, cosine, tangent, and their reciprocals, but in ancient Greek trigonometry, the chord, a more intuitive function , was ...

Origins of the Names of Trigonometric Functions - AlgebraLAB

www.algebralab.org/lessons/lesson.aspx?file=Trigonometry_TrigNameOrigins.xml

Sine: The word “sine” actually comes from a mistranslation of a word which is the origin of our word “chord.” It can be seen that QB is a chord and is twice the ...

Understanding Sine, Cosine and Tangent | Complete, Concrete ...

www.complete-concrete-concise.com/mathematics/understanding-sine-cosine-and-tangent

June 1st, 2012 | Comments Off on Understanding Sine, Cosine and Tangent .... You can read more about the history of trigonometric functions here, here, and ...

What Is Trigonometry? - Live Science

www.livescience.com/51026-what-is-trigonometry.html

May 30, 2015 ... Sine, cosine and tangent are the principle trigonometric functions. ... in “A History of Mathematics (3rd Edition)” (Pearson, 2008), trigonometry ...

The Beginnings of Trigonometry

www.math.rutgers.edu/~cherlin/History/Papers2000/hunt.html

The sole trigonometric function used by the ancient Greeks is the chord, which is ... Thus it is believed that he was born around 70 AD (History of Mathematics).

More Info

Trigonometric functions

www-groups.dcs.st-and.ac.uk

Analysis index · History Topics Index ... The first work on trigonometric functions related to chords of a circle. Given a circle of fixed radius, ... Similarly, in terms of chords rather than sin and cos, Ptolemy knew the formulas. sin(x + y) = sinx cos y  ...

trigonometry | Britannica.com

www.britannica.com

Apr 18, 2016 ... ... of angles and their application to calculations. There are six functions of an angle commonly used in trigonometry.... ... History of trigonometry ...

Origin of the Terms Sine, Cosine, Tangent, etc. - Math Forum - Ask ...

mathforum.org

Can you tell me the origin of the terms hypotenuse, sine, cosine, and tangent? Can you tell me how the trigonometric formulas for sine, cosine, ...