A) \[-1\]
B) 0
C) 1
D) \[\pi \]
Correct Answer: B
Solution :
\[\int_{0}^{\pi }{{{\cos }^{3}}xdx=\int_{0}^{2.\frac{\pi }{2}}{{{\cos }^{3}}x\,dx=0}}\], \[\{\because \,\,{{\cos }^{3}}(\pi -x)=-{{\cos }^{3}}x\}\].
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