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Mathematics 7 Online
OpenStudy (anonymous):

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

OpenStudy (anonymous):

You know the double angle formulas?

OpenStudy (anonymous):

double angle formula .. can you show it ?

OpenStudy (anonymous):

Yea sure.

OpenStudy (anonymous):

For tangent the double angle formula is:

OpenStudy (anonymous):

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