SOLUTION: What is the solution to sin squared x+2sinx-2 ?

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Question 742947: What is the solution to sin squared x+2sinx-2 ?
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
What is the solution to sin squared x+2sinx-2 ?
sin%5E2%28x%29%2B2sin%28x%29-2=0
solve for sin(x) by quadratic formula
a=1, b=2,c=-2
sin%28x%29+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
sin%28x%29+=+%28-2+%2B-+sqrt%28+4%2B8+%29%29%2F%282%29+
sin%28x%29+=+%28-2+%2B-+sqrt%2812+%29%29%2F%282%29+
sin(x)≈-2.72 (reject, (-1≤sinx≤1))
or
sinx≈0.732
x≈47.5º