SOLUTION: What's the ExactValue for sin -285 degrees without using a calculator ?

SOLUTION: What's the ExactValue for sin -285 degrees without using a calculator ?

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Question 577853: What's the ExactValue for sin -285 degrees without using a calculator ?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
sin(-285�) = sin(75�) = sin(45� + 30�) = [sin(45�)][cos(30�)] + [cos(45�)][sin(30�)]

sin(-285�) = {[sqrt(2)] / 2}{[sqrt(3)] / 2} + {[sqrt(2)] / 2}{1 / 2}
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