Q5 of 123 Page 9

Mark the Correct alternative in the following:

For all real values of x, cot x – 2 cot 2x is equal to


Given expression is cot x – 2 cot 2x for all real values of x


Consider


[ using and ]




= tan x


Therefore cot x – 2 cot 2x = tan x.


Option B is the answer.

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