HA - Section 6.1

How many degrees does half of a circle have?

• 360°

• 2π

• 180°

• π

How many radians does a circle have?

• 360°

• 2π radians

• π radians

• ^{2 radians}

Convert π/2 radians to degrees.

• 90⁰

• 180⁰

• 360⁰

• 60⁰

Convert 330⁰ to radians

• 11π/6
• 11π/3
• 11π/9
• 7π/6

A ____________ angle is formed with a clockwise rotation.

• positive

• negative

• standard

• straight

Which of the following is closest to the measure of the angle shown?

• 30º

• 40º

• 395º

• 440º

Positive angles are measured in which direction from standard position?

• clockwise

• counterclockwise

Find the length of the arc (in bold).

• A

• B

• C

• D

What is the area of the shaded region? Round to the nearest hundredth.

• 1.26 units²

• 452.39 units²

• 113.10 units²

• 40,715.04 units²

Convert to DMS mode. 38.425°

• 38°25′30″

• 38°26′

• 38°26′30″

• 38°7′5″