# Thread: Proving that the following fcns equal each other

1. ## Proving that the following fcns equal each other

Hi, I'm doing some review for my calculus class. This is one problem I'm stuck on. I greatly appreciate anyone's help.

Part A)

sec^2(θ) = tan^2(θ) + 1

Part B)

csc^2(θ) = cot^2(θ) + 1

2. tan^2(t)+1 = sin^2(t)/cos^2(t) + 1

= [sin^2(t)+cos^2(t)]/cos^2(t)

= 1/cos^2(t)

= sec^2(t)

The second is similar