Question 1018798
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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(2-sqrt(3))/2}}}.


   For details see the lesson <A HREF=http://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometric-functions-of-half-argument-Examples.lesson?content_action=edit_dev>Trigonometric functions of half argument - Examples</A>, Example 2 in this site.
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