SOLUTION: If A and B are both acute angles, tan A = 4/7 and tan B = 8, find the exact value of tan (A+B). Please show steps and what you did, I need to learn how to do this.

Algebra ->  Trigonometry-basics -> SOLUTION: If A and B are both acute angles, tan A = 4/7 and tan B = 8, find the exact value of tan (A+B). Please show steps and what you did, I need to learn how to do this.      Log On


   

Question 1106067: If A and B are both acute angles, tan A = 4/7 and tan B = 8, find the exact value of tan (A+B).
Please show steps and what you did, I need to learn how to do this.
Found 2 solutions by ikleyn, Fombitz:
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
.
Use the formula 


tan(A+B) = %28tan%28A%29%2Btan%28B%29%29%2F%281-tan%28A%29%2Atan%28B%29%29,


which is one of the BASIC formula of trigonometry.



Answer by Fombitz(32388) About Me  (Show Source):