SOLUTION: What are the x's of: sin(x)+sin(-x)=2

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Question 748450: What are the x's of: sin(x)+sin(-x)=2
Answer by josgarithmetic(39838) About Me  (Show Source):
You can put this solution on YOUR website!
Look at the unit circle to see how sine of x and sine of negative x are related. If you rotate a ray of 1 unit in the clockwise direction from the positive horizontal axis, then you have a -x. The sine of -x is the opposite of sine of positive x.

Your equation means,
sine%28x%29%2Bsine%28-x%29=2
sine%28x%29%2B%28-sine%28x%29%29=2
sine%28x%29-sine%28x%29=2
highlight%280=2%29
FALSE.