For 0 ≤ x ≤ 2π, sin x and cos x are both decreasing functions in the interval ________.

\(\left( {\pi ,\frac{{3\pi }}{2}} \right)\)

\(\left( {0,\frac{\pi }{2}} \right)\)

\(\left( {\frac{\pi }{2},\;\pi } \right)\)

\(\left( {\frac{{3\pi }}{2},\;2\pi } \right)\)

For 0 ≤ x ≤ 2π, sin x and cos x are both decreasing functions in

1.	For 0 ≤ x ≤ 2π, sin x and cos x are both decreasing functions in the interval ________.
A.	\(\left( {0,\frac{\pi }{2}} \right)\)
B.	\(\left( {\frac{\pi }{2},\;\pi } \right)\)
C.	\(\left( {\pi ,\frac{{3\pi }}{2}} \right)\)
D.	\(\left( {\frac{{3\pi }}{2},\;2\pi } \right)\)
Answer» C. \(\left( {\pi ,\frac{{3\pi }}{2}} \right)\)

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For 0 ≤ x ≤ 2π, sin x and cos x are both decreasing functions in the interval ________.

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