Intro to Unit Circle

Choose the best match for the graph.

• 30^o

• 45^o

• 60^o

• 90^o

Identify the Positive angle in both radians and degrees that represent point H.

Identify the Positive angle in both radians and degrees that represent point L.

Convert from degrees to radians:  135°

• 2π ∕ 3

• 3π ∕ 4

• 5π ∕ 4

• 3π ∕ 5

Positive angles are measured in which direction from standard position?

• Clockwise

• Counterclockwise

Convert 3π radians to degrees.

• 270⁰

• 540⁰

• 360⁰

• 560⁰

To find coterminal angles you can repetitively add or subtract ______ degrees

• 90

• 180

• 270

• 360

What is the reference angle?

• 43

• -43

• 47

• -47

What is the reference angle?

• 163

• 73

• 27

• 107

What is the reference angle?

• 48

• 138

• 132

• 42