Which of the following functions has period \[2\pi \] [Pb. CET 2004]

1.	Which of the following functions has period \[2\pi \] [Pb. CET 2004]
A.	\[y=\sin \left( 2\pi t+\frac{\pi }{3} \right)+\]\[2\sin \left( 3\pi t+\frac{\pi }{4} \right)+3\sin 5\pi t\]
B.	\[y=\sin \frac{\pi }{3}t+\sin \frac{\pi }{4}t\]
C.	\[y=\sin t+\cos 2t\]
D.	None of these
Answer» D. None of these

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Which of the following functions has period \[2\pi \] [Pb. CET 2004]

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