What is tan²2x?

1 Answer
Kalyanam S.
May 17, 2018

#color(green)(=> (4tan^2 x) / ( 1-tan^2x)^2#

Explanation:

#tan^2 (2x)#

#tan 2theta = (2tan theta) / (1 - tan^2 theta)#, identity

#=> (tan 2x)^2 = ((2tan x) / (1 - tan ^2 x))^2#

#color(green)(=> (4tan^2 x) / ( 1-tan^2x)^2#

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