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prove that f(x)=cos^(2)x+cos^(2)(pi/3+x)...

prove that `f(x)=cos^(2)x+cos^(2)(pi/3+x)-cosx*cos(x+pi/3)` is constant function. find the value of that constant

A

an odd function

B

an even function

C

a periodic function

D

f(0)=f(1)

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The correct Answer is:
B, C, D
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ARIHANT MATHS-FUNCTIONS-Exercise (More Than One Correct Option Type Questions)
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