Section 7.3: Unit Circle Quiz

What is the radius of a unit circle?

• 1

• 2

• 0

• π

Tags

CCSS.HSF.TF.A.2

Which quadrant would an angle of 150° be located in?

• Third quadrant

• Second quadrant

• Fourth quadrant

• First quadrant

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

What is the cosine of 90°?

• 0.5

• 0

• -1

• 1

Tags

CCSS.HSF.TF.A.2

If sin(t) = 3/8 and t is in the second quadrant, what is cos(t)?

• √55/8

• √31/8

• -√31/8

• 3/8

Tags

CCSS.HSF.TF.C.8

What is the sine of π/6?

• √3/2

• 0

• 1/2

• √2/2

Tags

CCSS.HSF.TF.A.2

Which of the following is a Pythagorean Identity?

• sin²(t) - cos²(t) = 1

• cos²(t) + sin²(t) = 1

• sin(t) * cos(t) = 1

• 1 + cos²(t) = sin²(t)

Tags

CCSS.HSF.TF.C.8

What are the coordinates of the point on the unit circle at an angle of 7π/6?

• (1/2, √3/2)

• (-1/2, -√3/2)

• (√3/2, 1/2)

• (-√3/2, -1/2)

Tags

CCSS.HSF.TF.A.2

What is the reference angle for an angle of 225°?

• 315°

• 135°

• 45°

• 225°

What is the cosine of an angle if its sine is 1/2 and it is in the first quadrant?

• -√3/2

• -1/2

• 1/2

• √3/2

Tags

CCSS.HSF.TF.C.8

Which quadrant does an angle of 320° fall into?

• Fourth quadrant

• First quadrant

• Third quadrant

• Second quadrant