Trig Identities: Formula Chart

What does this equation equal on the formula chart?

 $1-\cos^2x=$  

•  $1$  

•  $\sin^2x$  

•  $\cos^2x$  

•  $\tan^2x$  

What does this equation equal on the formula chart?

 $\frac{\text{1}}{\text{sec x}}=$  

•  $\cos x$  

•  $\sin x$  

•  $\sec x$  

•  $\csc x$  

What does this equation equal on the formula chart?
 $1+\cot^2x=$  

•  $\cot^2x$  

•  $\tan^2x$  

•  $\sec^2x$  

•  $\csc^2x$  

What does this equation equal on the formula chart?
 $\frac{\sin x}{\cos x}=$  

•  $\cot x$  

•  $\tan x$  

•  $\csc x$  

•  $\sec x$  

What does this equation equal on the formula chart?
 $\frac{1}{\cot x}=$  

•  $\cos x$  

•  $\sin x$  

•  $\tan x$  

•  $\frac{1}{\tan x}$  

What does this equation equal on the formula chart?
 $\frac{1}{\cos x}=$  

•  $\tan x$  

•  $\frac{1}{\sin x}$  

•  $\csc x$  

•  $\sec x$  

What does this equation equal on the formula chart?
 $\sec^2x-1=$  

•  $\sin^2x$  

•  $\tan^2x$  

•  $\sec^2x$  

•  $\csc^2x$  

What does this equation equal on the formula chart?
 $\frac{1}{\tan x}=$  

•  $\cot x$  

•  $\csc x$  

•  $\sec x$  

•  $\tan x$  

What does this equation equal on the formula chart?
 $\frac{\csc x}{\sec x}=$  

•  $\tan x$  

•  $\cot x$  

•  $\sin x$  

•  $1$  

What does this equation equal on the formula chart?
 $\cos x\sec x$  

•  $\sin x$  

•  $\cos x$  

•  $\sec x$  

•  $1$