Hello Student,
First of all , your question is not understandable properly. You have to mention things like that , where is limit tending to, and also write the question separately . You have mixed up all things in a single line without separation . So please post a new question with all necessary details . Only then we can help you.
Hope this helps.
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 : The value of $\sec x - \cos x = $?
Option 1: $\tan x \sin x$
Option 2: $\sec x \tan x$
Option 3: $\tan x \cos x$
Option 4: $\sec x \cos x$
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