Trig Reference Angles and Coterminal

What is the reference angle for 210 degrees?

• 45 degrees

• 60 degrees

• 90 degrees

• 30 degrees

Find a positive coterminal angle with -45 degrees.

• 315 degrees

• 225 degrees

• 90 degrees

• 180 degrees

Determine a coterminal angle with 480 degrees between 0 and 360 degrees.

• 420 degrees

• 300 degrees

• 240 degrees

• 120 degrees

What is the reference angle for -135 degrees?

• 30 degrees

• 90 degrees

• 60 degrees

• 45 degrees

Give an example of two coterminal angles with 60 degrees.

• 180 degrees and -120 degrees

• 300 degrees and -240 degrees

• 420 degrees and -300 degrees

• 120 degrees and -60 degrees

Find a coterminal angle with -720 degrees between 0 and 360 degrees.

• 0

• 180

• 270

• 450

What is the reference angle for 240 degrees?

• 60 degrees

• 90 degrees

• 30 degrees

• 120 degrees