Question

$\frac{1}{tan \: 3x \: - \: tan \: x} - \frac{1}{cot \: 3x \: - \: cot \: x} = {?}$
$a) \: sin \: 2x$
$b) \: cos \: 2x$
$c) \: tan \: 2x$
$d) \: cot \: 2x$

Find the correct option

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Answer 1

Step-by-step explanation:

it is cos 2x

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