SOLUTION: if f(x)=2cos^2 x+sin x-1 find the value of f(pi/2)

SOLUTION: if f(x)=2cos^2 x+sin x-1 find the value of f(pi/2)

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Question 865770: if f(x)=2cos^2 x+sin x-1 find the value of f(pi/2)
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
if f(x)=2cos^2 x+sin x-1 find the value of f(pi/2)
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f(pi/2) = 2*cos^2(pi/2) + sin(pi/2) -1
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= 2*0 + 1 - 1
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= 0
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Cheers,
Stan h.
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