Question

Verify: cos (x- π/4) = √2/2(cosx+sinx)


Need help ASAP pleasee

Answer 1

can i get the answer choices because im not sure if its true or false or number or equation because if its true or false then its true

Answer 2

It isn't multiple choose question I have to show proof like how they equal to eachother

Answer 3

Why not just verify it?

\(\cos(\alpha - \beta) = \cos(\alpha)\cos(\beta) + \sin(\alpha)\sin(\beta)\)

Answer 4

I am supposed to verify it but what your saying is that if I use cos (a-b) I will be able to prove it?

Answer 5

Yup. You'll be done.

Answer 6

Cool thank you!