How to prove tan3x tan3x=3 tan x-tan^3x/1-3tan^2x?
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Tan3x can we written as Tan(x+2x)
Now using the formula Tan (A+B)=Tan A+Tan B/1-TanATanB
Open up the equation and now then open Tan2x using the above identity and we can get the formula of Tan3x...
Now using the formula Tan (A+B)=Tan A+Tan B/1-TanATanB
Open up the equation and now then open Tan2x using the above identity and we can get the formula of Tan3x...
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