Question 93

cot -11π/6 is equals to

Solution

Expression : cot -11π/6

$$\because cot(-x) = -cot (x)$$

= $$-cot(\frac{11\pi}{6})$$

= $$-cot(2\pi - \frac{\pi}{6})$$

= $$-[-cot(\frac{\pi}{6})] = cot(\frac{\pi}{6})$$

= $$\sqrt{3}$$

=> Ans - (D)

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