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

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

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R.H.S.

tan 4x=(4tan x(1-tan^(2)x))/(1-6tan^(2)x+tan^(4)x)
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Prove that:tan4x=(4tanx(1-tan^2x))/(1-6tan^2x+tan^4x)
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tan4 theta=4tan theta(1-tan^(2)theta)/(1-6tan^(2)theta+tan^(4)theta)
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tan ^ (-1) (x + (2) / (x))-tan ^ (-1) ((4) / (x)) = tan ^ (-1) (x- (2)...
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tan 4x=(4tan x(1-tan^(2)x))/(1-6tan^(2)x+tan^(4)x)
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7 tan 4x = (4 tan x (1-tan^(2)x))/( 1-6 tan^(2) x+ tan^(4)x)
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tan 4x = ( 4tan x(1- tan^(2)x))/(1-6 tan^(2) x + tan^(4) x)
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tan4x=(4tan x(1-tan^(2)x))/(1-6tan^(2)x+tan^(4)x)
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tan4x=(4tan x(1-tan^(2)x))/(1-6tan^(2)x+tan^(4)x)
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