A) \[1\]
B) \[0\]
C) \[\frac{\sqrt{3}}{2}\]
D) \[1/2\]
Correct Answer: D
Solution :
\[\cos \left( 29\frac{\pi }{3} \right)=\cos \left( \frac{(27+2)\pi }{3} \right)\] \[=\cos \left( 9\pi +\frac{2\pi }{3} \right)\] \[=-\cos \frac{2\pi }{3}=-\cos \left( \frac{\pi }{2}+\frac{\pi }{6} \right)=\sin \frac{\pi }{6}=\frac{1}{2}\]
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