SOLUTION: What are the x's of: ((sin^2)x) +(cos)x) +1)) = 0

SOLUTION: What are the x's of: ((sin^2)x) +(cos)x) +1)) = 0

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Question 747131: What are the x's of: ((sin^2)x) +(cos)x) +1)) = 0
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
What are the x's of: ((sin^2)x) +(cos)x) +1)) = 0

(cos(x)-2)(cos(x)+1)=0
cos(x)=2 (reject,(-1 ≤ cosx ≤ 1)
cos(x)=-1
x=π
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