SOLUTION: Please solve this: Use the sum and difference identities to prove that: sin(x+y)-sin(x-y) = 2cosxsiny

SOLUTION: Please solve this: Use the sum and difference identities to prove that: sin(x+y)-sin(x-y) = 2cosxsiny

Algebra.Com

Question 1011263: Please solve this: Use the sum and difference identities to prove that:
sin(x+y)-sin(x-y) = 2cosxsiny
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

prove that:

by definition

so,

RELATED QUESTIONS
sin(x)*cos(y)=1/2[sin(x+y) + sin(x-y)] (1) cos(x)*sin(y)=1/2[sin(x+y) - sin(x-y)] (2) (answered by jim_thompson5910)

Use identities to solve trigonometric equation? sin(x) + sin 2(x) = 0 I use... (answered by josgarithmetic)

Use the sum-to-product and product-to-sum identities to prove: sin 8θ-sin 10θ = cot (answered by Edwin McCravy)

Please prove this using Trigonometric Identities: sin⁴x - cos⁴x + cos�x =... (answered by lwsshak3)

Can you please help me solve this trigonometric identities question: 1)Prove the... (answered by jsmallt9)

Can you please help me solve this trigonometric identities question: 1)Prove the... (answered by alicealc)

Can you please help me solve this trigonometric identities question: 1)Prove the... (answered by stanbon)

Could anyone please prove this: sin(x+y)sin(x-y)=cos^2(y)-cos^2(x) *involves adding and... (answered by stanbon)

Can you help me, please? Thank you! Prove the identity sin(x+y) - sin(x-y) =... (answered by jim_thompson5910)