Author Topic: The meaning of cos? and sin?  (Read 19200 times)

Fu-Kwun Hwang

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The meaning of cos? and sin?
« on: October 13, 2014, 08:28:41 pm »
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« Last Edit: November 01, 2014, 02:16:31 pm by lookang »

Rolandcharcker

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Re: The meaning of cos? and sin?
« Reply #2 on: January 16, 2015, 03:05:26 pm »
An angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle. Angles provide a means of expressing the difference in slope between two rays meeting at a vertex without the need to explicitly define the slopes of the two rays. Angles are studied in geometry and trigonometry.
sin theta is = to opposite/hypotenuse.
cos theta is = to adjacent/hypotenuse.
tan theta is = to opposite/ adjacent. -*-