Radian Unit Circle

What is the length of the radius of a unit circle?

• one unit

• pi units

• radians

• diameter

How do you convert from degrees to radians?

• multiply by the factor
  π/180

• multiply by the factor 180/
  π

• use your calculator

• ask siri

Tags

CCSS.HSF.TF.A.1

In which quadrant is 2π/3?

• I

• II

• III

• IV

Tags

CCSS.HSF.TF.A.2

What is the exact radian measure of an angle of 132°?

• 11π/15

• 15π/11

• 22π/15

• 15π/22

Tags

CCSS.HSF.TF.A.1

What is 120 degrees in radians?
 

• 2π/3

• π/3

• 5π/3

• 4π/3

Tags

CCSS.HSF.TF.A.1

What is 360 degrees in radians? 

• 2π/3

• 5π/4

• 2π

• π

Tags

CCSS.HSF.TF.A.1

You're getting pretty good at this now.  What is 180° equal to?

• π

• 2π

• π/2

• 2π/3

Tags

CCSS.HSF.TF.A.1

sin π/4

• √2∕2

• 1/2

• √3/2

• 0

Tags

CCSS.HSF.TF.A.2

cos 5π/6

• -1/2

• 1/2

• √3/2

• -√3/2

Tags

CCSS.HSF.TF.A.2

cos 4π/3

• -√3/2

• √3/2

• 1/2

• -1/2

Tags

CCSS.HSF.TF.A.2