Prove that , tan 4x = 4 tan x (1-tan^2 x ) / (1-6 tan^2x + tan^4x).

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asked Jul 5, 2017 55.7k views

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David Sauter · Answer 1 · 2017-07-09T20:44:23+0000

Based on your question to prove that both of the equations are true, you must first simplify them. So in accordance with my calculation and practicing step by step procedure i came with a solution and result in an answer of 1-(2tanx/1-tan^2x)^2

Prove that , tan 4x = 4 tan x (1-tan^2 x ) / (1-6 tan^2x + tan^4x).

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