SOLUTION: Simplify (sin(f+g)+sin(f-g))/(cos(f+g)+cos(f-g))

Algebra ->  Trigonometry-basics -> SOLUTION: Simplify (sin(f+g)+sin(f-g))/(cos(f+g)+cos(f-g))      Log On


   

Question 931859: Simplify (sin(f+g)+sin(f-g))/(cos(f+g)+cos(f-g))
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
After expanding all 4 expressions using sum/difference identities we get:





which simplifies to


%0D%0A%282%2Asin%28f%29%2Acos%28g%29%29%2F%282%2Acos%28f%29%2Acos%28g%29%29%0D%0A
and then to


tan%28f%29