SOLUTION: I can't figure this type of trig question; evaluate inverse trig function when the number in the parenthesis is negative. I can get the answer when it is not negative inside the p

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Question 1032309: I can't figure this type of trig question; evaluate inverse trig function when the number in the parenthesis is negative. I can get the answer when it is not negative inside the parenthesis. Help please!
Example: sin^-1 * (negative of the square root of two divided by two)
thanks.

Answer by ikleyn(52833) About Me  (Show Source):
You can put this solution on YOUR website!
.
I can't figure this type of trig question; evaluate inverse trig function when the number in the parenthesis is negative. I can get the answer when it is not negative inside the parenthesis. Help please!
Example: sin^-1 * (negative of the square root of two divided by two)
thanks.
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arcsin%28-sqrt%282%29%2F2%29 = -45°  or  -pi%2F4.


In general, arcsin%28-a%29 = -arcsin%28a%29.