SOLUTION: what is the equivalent value of 2tan(4x)/1-tan(4x)tan(4x)? a. tan2x b. tan4x c. tan8x d. tanx

Algebra ->  Trigonometry-basics -> SOLUTION: what is the equivalent value of 2tan(4x)/1-tan(4x)tan(4x)? a. tan2x b. tan4x c. tan8x d. tanx      Log On


   

Question 1125855: what is the equivalent value of 2tan(4x)/1-tan(4x)tan(4x)?
a. tan2x
b. tan4x
c. tan8x
d. tanx
Answer by ikleyn(52790) About Me  (Show Source):
You can put this solution on YOUR website!
.
%282%2Atan%284x%29%29%2F%281-tan%284x%29%2Atan%284x%29%29 = tan(4x + 4x) = tan(8x).


Addition arguments formula for tangent.