Exam Review: Unit Circle

What is the exact coordinates of  3π/4 on the unit circle?

• (−√2∕2, √2∕2)
• (−√2∕2, −√2∕2)
• (−√3∕2, −√2∕2)
• (√2∕2, −√2∕2)

Tags

CCSS.HSF.TF.A.2

What the coordinates of 180° on the unit circle?

• 0, 1
• 1, 0
• -1, 0
• 0, -1

Tags

CCSS.HSF.TF.A.2

What is the value of sine at 210?

• 1/2
• -1/2
• √3 / 2
• -√3 / 2

Tags

CCSS.HSF.TF.A.2

What is the value of cosine at 135

• 0
• 1/2
• √2 /2
• -√2 /2

Tags

CCSS.HSF.TF.A.2

What are the coordinates of  210° on the unit circle?

• (−√3/2, −1/2)
• (√3/2, −1/2)
• (−√3/2, 1/2)
• (−1/2,−√3/2 )

Tags

CCSS.HSF.TF.A.2

What quadrant is 6π/7 in?

• I

• II

• III

• IV

What quadrant is -2π/3 in?

• I

• II

• III

• IV

Tags

CCSS.HSF.TF.A.2

What quadrant is -400° in?

• I

• II

• III

• IV

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.C.8

Find secθ for the coordinate (3, -4)

• -4/5

• 5/3

• -5/3

• 3/5

find cotθ for the coordinate (-6, 7)

• -6/7

• 7/6

• 6/7

• √75/6