Unit Circle

tan 7π/4

• -1

• 1

• √2/2

• undefined

sin 7π/6

• 1/2

• -1/2

• √3/2

• -√3/2

Find a coterminal angle to -180 degrees.

• 180

• 90

• 270

• 360

What are the negative and positive coterminal angles of -225 degrees?

• 375°, -600°

• 125°, -356°

• 135°, -585°

• 60°, -120°

What is the reference angle for 240°?

• 60°

• 30°

• 45°

• 210°

What quadrant is -2π/3 in?

• I

• II

• III

• IV

In which quadrant is -570⁰

• I

• II

• III

• IV

What is the reference angle for -30°?

• 150°

• 30°

• 80°

• 60°

Q1. What is the value of sin x?

• A) csc x

• B) sec x

• C) cot x

• D) tan x

Which of the following is a negative coterminal angle of 165 degrees?

• 195

• 525

• -525

• -195