Question

Which statement is true for all real values of θ?

sin²θ − cos²θ = 1
cos²θ = 1 + sin²θ
sec²θ - tan²θ = 1
cot²θ = csc²θ +1

Answer 1

I think its "cos²θ = 1 + sin²θ"

Answer 2

hope you know the basic formula of trigonomatry

sin²θ +cos²θ = 1

Answer 3

check here : https://questioncove.com/study#/updates/643a3414804efd304240b00

Answer 4

@surjithayer

Answer 5

No I change my mind I think its C.)

Answer 6

Jhony 9 is correct.
c is correct.

Answer 7

So how do I come up with that answer because I am confused about it