SOLUTION: Verify the identity. cos (x - y) - cos (x + y) = 2 sin x sin y

SOLUTION: Verify the identity. cos (x - y) - cos (x + y) = 2 sin x sin y

Algebra.Com

Question 698216: Verify the identity.
cos (x - y) - cos (x + y) = 2 sin x sin y

Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!
2sin(x)sin(y)=cos(x-y)-cos(x+y)
RELATED QUESTIONS
Verify the identity. cos (x - y) - cos (x + y) = 2 sin x sin y (answered by solver91311)

Verify the identity. cos (x - y) - cos (x + y) = 2 sin x sin y (answered by lynnlo)

Verify the identity. (cos(x) - cos(y))/(sin(x) + sin(y)) + (sin(x) - sin(y))/(cos(x) + (answered by solver91311)

Verify the identity. sin (x + y) - sin (x - y) = 2 cos x sin y (answered by jim_thompson5910)

verify the identity of sin(x+y) + sin (x-y) = 2sin x cos... (answered by jim_thompson5910)

What are the sequence of steps that verify the identity (cot x + cot y) / (cot x cot y... (answered by lwsshak3)

Verify the identity: (cos x-sin... (answered by robertb)

verify the identity cos (x + pi/2) = -sin... (answered by tommyt3rd)

verify the identity. cos (x + pi/2) = - sin... (answered by Theo,MathLover1)