Question

Please help!
Verify:

Answer 1

so far I got to here but I cant cancel anything out to get sin^2a-sin^2B

Answer 2

Have you searched for any trigonometric identity?

Answer 3

ive actually figured it out i just distributed incorrectly but thanks!

Answer 4

For example:
sin(α + β) = sin(α)cos(β) + cos(α)sin(β)
sin(α – β) = sin(α)cos(β) – cos(α)sin(β)

Answer 5

i just distributed and canceled out and what remained was the answer

Answer 6

haha thanks for the medal lol