A) \[-\sqrt{3}\]
B) \[\frac{1}{\sqrt{3}}\]
C) \[\frac{-1}{\sqrt{3}}\]
D) \[\sqrt{3}\]
Correct Answer: D
Solution :
\[\cot \left( -\frac{11\pi }{6} \right)\] \[=-\cot \frac{11\pi }{6}=-\cot \left( 2\pi -\frac{\pi }{6} \right)\] \[=\cot \frac{\pi }{6}=\sqrt{3}\] \[[cot(-\theta )=-cot\theta ;cot(2\pi -\theta )=-cot\theta ]\]You need to login to perform this action.
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