SOLUTION: Use similar triangles to define, in any right triangle with hypotenuse z, the trigonometric function as cos0= x/z sin0= y/z tan0 = y/x Hint: The cirle has a radius 1.

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Question 437565: Use similar triangles to define, in any right triangle with hypotenuse z, the trigonometric function as cos0= x/z sin0= y/z tan0 = y/x Hint: The cirle has a radius 1.
Answer by robertb(5830)   (Show Source): You can put this solution on YOUR website!
The radius of the unit circle is 1, then using similar triangles,
==> , where .
Similarly, .

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