\[\int_{-a}^{a}{\sin x\,f(\cos x)\,dx=}\] [RPET 1997]

\[2\int_{0}^{a}{\sin x\,f(\cos x)\,dx}\]

\[\int_{-a}^{a}{\sin x\,f(\cos x)\,dx=}\] �

1.	\[\int_{-a}^{a}{\sin x\,f(\cos x)\,dx=}\] [RPET 1997]
A.	\[2\int_{0}^{a}{\sin x\,f(\cos x)\,dx}\]
B.	0
C.	1
D.	None of these
Answer» C. 1

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\[\int_{-a}^{a}{\sin x\,f(\cos x)\,dx=}\] [RPET 1997]

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