SOLUTION: Prove the identity. sin(x)+sin(3x)+sin(5x)/cos(x)+cos(3x)+cos(5x)=tan(3x)

Algebra ->  Trigonometry-basics -> SOLUTION: Prove the identity. sin(x)+sin(3x)+sin(5x)/cos(x)+cos(3x)+cos(5x)=tan(3x)      Log On


   



Question 1110252: Prove the identity.
sin(x)+sin(3x)+sin(5x)/cos(x)+cos(3x)+cos(5x)=tan(3x)

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Prove the identity.
sin(x)+sin(3x)+sin(5x)/cos(x)+cos(3x)+cos(5x)=tan(3x)
-------------
Look up "Half angle formulas" on Wikipedia.
I'll be glad to check your work, but I don't need the practice doing these.