\(\rm \frac{\cot x-\tan x}{\cot 2x}\) का मान निम्नलिखित में से क्या होगा? 

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Answer (Detailed Solution Below)

Option 2 : 2
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प्रयुक्त सूत्र 

cot 2x = 1/2(cot x - tan x)

गणना 

⇒ (cot x - tan x)/cot 2x

⇒ (cot x - tan x)/1/2(cot x - tan x)

⇒ 2.

उत्तर 2 है। 

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