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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