SOLUTION: prove the following using double angle formula A) sin^2 2A= 4cos^2 A- 4cos^4 A plz help me solving .. thx lots

Algebra ->  Trigonometry-basics -> SOLUTION: prove the following using double angle formula A) sin^2 2A= 4cos^2 A- 4cos^4 A plz help me solving .. thx lots      Log On


   

Question 1120334: prove the following using double angle formula
A) sin^2 2A= 4cos^2 A- 4cos^4 A
plz help me solving ..
thx lots
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!










You should be able to finish from here.


John

My calculator said it, I believe it, that settles it