Angles in Standard Form

Standard position is when .....

• the initial side of the angle is on the positive x-axis.

• the initial side of the angle is on the negative x-axis.

• the initial side of the angle is on the positive y-axis.

• the initial side of the angle is on the negative y-axis.

Which is a coterminal angle to the angle shown?

• -38

• 360

• 398

• 142

Which is a coterminal angle to the angle shown?

• 25

• -205

• 335

• 516

Which is a coterminal angle to the angle shown?

• 613

• 73

• -117

• 17

An angle is in standard position if the initial side is along the _______?

• positive y-axis

• positive x-axis

• negative y-axis

• negative x-axis

Write the angle in standard position. N18°W

• 72

• 108

• 162

• 198

In the xy-plane, two different angles α and β are in standard position and share a terminal ray. Based on this information, which of the following gives possible values for α and β?

• α = -π/2 and β = π/2

• α = -π/2 and β = -3π/2

• α = π/2 and β = -3π/2

• α = π/2 and β = 3π/2

When the rotation from initial to terminal side is counterclockwise this describes. 

• Positive Angle

• Negative Angle

Find the measure of an angle whose terminal side passes through (-5, -8). (Think about which quadrant the angle is in.)

• 58^o

• 238^o

• -238^o

• 122^o