Can I have a brief history of Sohcahtoa?
Sohcahtoa is the easy way to remember how Sine, Cosine and Tangent work in Trigonometry. SOH stands for Sine equals opposite over hypotenuse. CAH stands for cosine equals adjacent over hypotenuse. TOA stands for tangent equals opposite over adjacent.
Answered -
About Cosine
The cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.
About Hypotenuse
The length of the hypotenuse is found by using the Pythagorean theorem. A Hypotenuse is the longest side of a right-angled triangle. This is the side that is opposite of the right angle.
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