SSC CHSL 19th March 2020 Shift-2

Question 61

If X = $$\tan 40^\circ$$, then the value of $$2 \tan 50^\circ$$ will be:

Solution

Given, X = $$\tan 40^\circ$$

$$\therefore\ 2\tan50^{\circ}=2\tan\left(90-40^{\circ}\right)$$

$$=2\cot40^{\circ}$$

$$=\frac{2}{\tan40^{\circ\ }}$$

$$=\frac{2}{X\ }$$

Hence, the correct answer is Option A

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