Unit Circle Quiz

Suppose that θ is a central angle of the unit circle. If cos θ = -√2/2, which of the following is θ?

• 45°

• 135°

• 270°

• 315°

If sin θ < 0 and tan θ > 0, in which quadrant does θ lie?

• Quadrant I

• Quadrant II

• Quadrant III

• Quadrant IV

If cos θ = 1/2 and θ is in the first quadrant, what is the value of θ?

• 30°

• 45°

• 60°

• 90°

What is the value of sin 90°?

• 0

• 1/2

• √2/2

• 1

If tan θ = √3, which of the following could be the value of θ?

• 30°

• 45°

• 60°

• 90°

What is the value of cos 0°?

• 0

• 1

• -1

• √2/2

For which angle is the value of sin θ equal to cos θ?

• 30°

• 45°

• 60°

• 90°

If sec θ = 2, what is the value of θ in the first quadrant?

• 30°

• 45°

• 60°

• 90°

What is the value of cot 45°?

• 0

• 1

• √2

• √3

What is the value of csc 30°?

• 1/2

• √2/2

• 2

• √3