How??

This question was asked in Ex 7.6, 18

how??

kriti vajpayee

Sept. 29, 2017, 5:58 p.m.

Davneet Singh

Dec. 3, 2017, 9:08 p.m.

Hello Kriti

Differentiation of tan x is sec² x.

Now, tan x/2 differentiation is sec² x/2 . (x/2)' = sec² x/2 . (1/2) = 1/2 sec² x/2

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