Unit Circle

Choose the best match for the graph.

• 30^o
• 45^o
• 60^o
• 90^o

sin (π/2)

• √3/2
• √2/2
• 1/2
• 1

Convert the following to degrees:
-8π/5 radians

• -288⁰
• -260⁰
• -275⁰

Choose the best match for the graph.

• 30^o
• 45^o
• 60^o
• 90^o

Choose the best match for the graph.

• 30^o
• 45^o
• 60^o
• 90^o

Choose the best match for the graph.

• 45^o
• 90^o
• 135^o
• 180^o

Based on the unit circle, what is the value of sin?

• y

• x

• x/y

• y/x

Based on the unit circle, what is the value of cos?

• y

• x

• x/y

• y/x

Based on the unit circle, what is the value of tan?

• y/r
• x/r
• r/y
• y/x

sin(11π/6)

• -1/2
• 1/2
• √3/2
• -√3/2