Unit Circle 20 Questions

What is the reference angle for 330 degrees?

[Remember, a reference angle must be in the top right]

• 30

• 45

• 60

• 210

• none

Tags

CCSS.HSF.TF.B.7

What is the reference angle for 117 degrees?

Tags

CCSS.HSF.TF.B.7

How many radians is 225 degrees?

• π/4

• 3π/4

• 5π/4

• 225π/4

• none

Tags

CCSS.HSF.TF.A.2

Find the coordinates of the point at 50 degrees on the unit circle.

• (50,40)

• (.64,.77)

• (.77,.64)

• (40,50)

• None of these

Tags

CCSS.HSF.TF.A.2

Find the height of the point located at 170 degrees on the unit circle.

Then ROUND your answer to TWO DECIMAL PLACES

Tags

CCSS.HSF.TF.A.2

Write the EXACT coordinates of the point located at 60 degrees on the unit circle.

• (.5,.9)

• (1/2,√3/2)

• (√3/2,1/2)

• (.866,.5)

• None of these

Tags

CCSS.HSF.TF.A.2

What is the sine value of π/4 radians?

• .785

• 45

• √2/2

• -√2/2

• none of these

Tags

CCSS.HSF.TF.A.2

The angle π/12 radians would be located in which quadrant?

• I

• II

• III

• IV

Tags

CCSS.HSF.TF.A.2

What is the cosine value of 5π/4 radians?

• 225

• √2/2

• -√2/2

• 1/2

• none of these

Tags

CCSS.HSF.TF.A.2

Which of the following has a positive cosine and a negative sine?

• 11

• 111

• 211

• 311

• none of these

Tags

CCSS.HSF.TF.A.2