Q. 28

# Mark the Correct alternative in the following:If tan x = t then tan 2x + sec 2x is equal toA.B. C. D.

Given tan x = t

then tan 2x + sex 2x =

[ using the formulae for tan 2x and sec 2x in terms of tan x,

and ]

Now

As already given tan x = t

Hence the answer is option A.

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