A) \[\frac{\pi }{3}\]
B) \[\frac{5\pi }{3}\]
C) \[\frac{2\pi }{3}\]
D) \[\frac{4\pi }{3}\]
Correct Answer: A
Solution :
\[\sin \left( \theta +\frac{\pi }{6} \right)=1=\sin \left( \frac{\pi }{2} \right)\Rightarrow \theta =\frac{\pi }{2}-\frac{\pi }{6}=\frac{\pi }{3}\].
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