Question

True or false: The equation tan2x + 1 = sec2x.

Answer 1

Is this tan(2x) + 1 = sec(2x) or tan^2(x) + 1 = sec^2(x)?

Answer 2

Tan^2x + 1 = sec^2x

Answer 3

Start with the basic Pythagorean identity
sin^2(x) + cos^2(x) = 1
and then divide the entire equation by cos^2(x)

Answer 4

Okay thanks