Question

Prove using trig funtions:
tan^2 cos^2 + cos^2 = 1

Please show steps if possible :D

Answer 1

tan^2x cos^2x + cos^2x = 1

not just tan^2

Answer 2

\[\tan^2x ~~\cos^2x + \cos^2x = 1 \]\[(\sin^2x/\cos^2x)~~ \cos^2x + \cos^2x = 1\]\[\sin^2x + \cos^2x = 1\]makes sense ?

Answer 3

Yes! Thanks a lot. I appreciate it! will give medal

Answer 4

If you want to give it to me, I don';t mind of course :)

Answer 5

You welcome !