Rotational Angles

How to find the reference angle for an angle less than -360 degrees?

• Add 360 degrees to the angle until the result is greater than -360 degrees, then find the reference angle as usual.

• Subtract 360 degrees from the angle

• Divide the angle by 360 degrees

• Multiply the angle by 360 degrees

This diagram represents...

• a reference angle of 30'

• a reference angle of 210'

• a coterminal angle of 210'

• a standard position of an angle that is 210'

• a standard position of an angle that is 30'

Which angle is coterminal with 190'?

• 610'

• -160'

• 910'

• -510'

What is the reference angle for 54π/8 ?

• 3π/4

• π/2

• 3π/2

• π/4

which Greek letter is the symbol used for the standard position measure of an angle?

• θ

• Δ

• α

• μ

• λ

• A
• B
• C
• D

Which angle is coterminal to 100º?

• –100º

• 260º

• 460º

• 660º

State the quadrant in which the terminal side of the angle lies: 600°

• I

• II

• III

• IV

Find the measure of the angle

• 40

• 220

• 310

• 50

Which sketch is -295°?

• A

• B

• C

• D