Co-Terminal and Reference Angles in Radians

Negative angles are measured in which direction from standard position?

• Clockwise

• Counterclockwise

Find an angle coterminal with an angle measuring 17π / 4 radians.

• π ∕ 3
• 5π ∕ 4
• π ∕ 4
• 13π ∕ 4

• Yes

• No

• Yes

• No

To find an angle that is coterminal to a given angle, add or subtract _______________ and the given angle.

Positive angles are measured in which direction from standard position?

• Clockwise
• Counterclockwise

What is the reference angle for 5pi/4?

• pi/4
• 7pi/4
• pi/6
• pi/3