Question

Verifying Trigonometric Identities
1.) (1+sin x)(1-sin x)
The answer is cos^2 x.
Could someone help me, I do not know how to get that answer.

Answer 1

Have you considered multiplying the two factors?

Answer 2

I thought you were not allowed to multiply with those.

Answer 3

If you paid for that information, please go get your money back.

Multiply them, just like any other two binomials.