SOLUTION: Is the sin of -3pi/4 = -sqrt2/2 or is it not negative?

SOLUTION: Is the sin of -3pi/4 = -sqrt2/2 or is it not negative?

Algebra.Com

Question 451075: Is the sin of -3pi/4 = -sqrt2/2 or is it not negative?
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
If the angle is expressed in radians, then indeed .
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