SOLUTION: Find the exact value of sin 195 degrees. Use SQRT (x) to express the radical of x.

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Question 1018798: Find the exact value of sin 195 degrees. Use SQRT (x) to express the radical of x.
Answer by ikleyn(52817) About Me  (Show Source):
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Find the exact value of sin 195 degrees. Use SQRT (x) to express the radical of x.
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1. sin(195°) = -sin(15°).


2. sin(15°) = sqrt%282-sqrt%283%29%29%2F2.


   For details see the lesson Trigonometric functions of half argument - Examples, Example 2 in this site.