Precalc Test 8 Review: Unit Circle

What is 10° in radians?

• π/18

• 2π/5

• π/6

• π/9

what is 165° in radians?

• 13π/12

• 7π/12

• 19π/12

• 11π/12

what is π/12 in degrees?

• 75°

• 15°

• 105°

• 60°

• 60⁰

• 30⁰

• 90⁰

• 45⁰

What is 5π/12 in degrees?

• 105°

• 75°

• 165°

• 195°

Convert - 13π / 6 radians into degrees

• -330^o

• -390^o

• -300^o

• -315^o

What is the radius of the unit circle?

• 1
• 2
• 10
• It varies.

The sine of any angle on the unit circle is the y-coordinate.

• True
• False

The cosine of any angle on the unit circle is the y-coordinate.

• True
• False

• 1

• 1/2

• √3/2

• √2/2