Math Midterm Exam Revision

sec x =

sin²θ=

• 1 - cos²θ

• 1 - sin²θ

• sec²θ - 1

• csc²θ - 1

• csc²θ

• csc θ sec θ

• cot θ tan θ

• 1/sinθ

Please select the correct solution

• csc² x

• cot² x

• sin² x

• sec² x

Is this a pythagorean identity?
tan²x + 1 = secx

• Yes

• No

Simplify:
(secx-1)(secx+1).  
Hint: you will need to FOIL first

• tan²x
• sinx
• cot²x
• cosx

Simplify:  tanxcotx-cos²x

• tanx
• cotx
• sin²x
• cos²x