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16.quad tan2x=(2tan x)/(1-tan^(2)x)...

16.quad tan2x=(2tan x)/(1-tan^(2)x)

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Show that tan 2 x=(2 tan x)/(1-tan ^(2) x)

If x=30o, verify that : tan2x=(2tan x)/(1-tan^(2)x) (ii) sin x=sqrt((1-cos2x)/(2))

Prove that tan2x=(2tanx)/(1-tan^2 x)

Prove that: tan4x=(4tan x(1-tan^(2)x))/(1-6tan^(2)x+tan^(4)x)

tan4x=(4tan x(1-tan^(2)x))/(1-6tan^(2)x+tan^(4)x)

tan4x=(4tan x(1-tan^(2)x))/(1-6tan^(2)x+tan^(4)x)

Prove the following: tan 4x =(4tan x (1-tan^2x))/(1-6 tan^2x + tan^4x)

tan 4x = (4tan x(1-tan^2 x))/(1-6tan^2 x + tan^4 x

tan 4x = (4 tan x (1- tan ^(2) x ))/( 1 - 6 tan ^(2) x + tan ^(4) x)

tan 4x = (4 tan x (1- tan ^(2) x ))/( 1 - 6 tan ^(2) x + tan ^(4) x)