Hello there,
You have mixed up all things in a single line without separation . The question is difficult to read . We are not getting where the limit is tending and also from where the question starts .So please post a new question with all necessary details . Only then we can help you.
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Question : Using trigonometric formulas, find the value of $(\frac{\sin (x-y)}{\sin (x+y)})(\frac{\tan x+\tan y}{\tan x-\tan y})$
Option 1: –2
Option 2: 2
Option 3: 0
Option 4: 1
Question : What will be the value of $\cos x \operatorname{cosec} x - \sin x \sec x$?
Option 1: $\cot \frac{2x}{2}$
Option 2: $\tan 2 x $
Option 3: $\cot 2 x $
Option 4: $ 2 \cot 2x$
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