Applying and analysing trigonometric functions

 $\sin^2x+\cos^2x=$  

•  $1$  

•  $-1$  

•  $\tan^2x$  

•  $\cot^2x$  

Select the MOST SIMPLIFIED answer for:

 $\frac{\tan x}{\sin x}$  

•  $\csc x$  

•  $\frac{1}{\cos x}$  

•  $\sec x$  

•  $\frac{1}{\sin x}$  

• sin²θ
• cosθ
• tanθ
• 1- sin²θ

Is this a pythagorean identity?
tan²x + 1 = secx

• Yes
• No

• A

• B

• C

• D

Select the MOST SIMPLIFIED answer for the problem:

 $\frac{1-\cos^2x}{\sin^2x}$  

•  $\sin^2x$  

•  $\cos^2x$  

• 1

•  $\frac{\sin^2x}{\sin^2x}$  

Simplify

• sin²θ
• cosθ
• tanθ
• 1- sin²θ

 $\frac{\cos^2x+\sin^2x}{\sec x}$  

•  $\frac{1}{\sec x}$  

•  $\sin x$  

•  $\cos x$  

Simplify

• csc²θ
• sec²θ
• cscθ
• 1

Simplify:  tanxcotx-cos²x

• tanx
• cotx
• sin²x
• cos²x