Question

How would I solve this, Prove: tan^2 0*cos^2 0 + cos^2 0 =1? Could someone show me how to do it please? Thank you!

Answer 1

use
tan = sin / cos

Answer 2

But there isn't sin in this equation. Unless I am reading this problem all wrong?

Answer 3

tan^2 θ * cos^2 θ + cos^2 θ = 1

(sin^2 θ / cos^2 θ) * cos^2 θ + cos^2 θ = 1

Answer 4

Oh okay, I see what you mean! Thank you very much.