Introduction to Co-Terminal Angles Reference Angles

Find the reference angle for an angle measuring -300⁰

• 60⁰

• -60⁰

• 30⁰

• 45⁰

What is the reference angle for 240 degrees?

• 60 degrees
• 30 degrees
• 45 degrees
• 210 degrees

Find a coterminal angle to -180 degrees.

• 180
• 90
• 270
• 360

Find a coterminal angle to 45 degrees.

• 360
• 405
• 315
• 295

Find a coterminal angle to 200 degrees.

• -520

• -200

• 160

• -380

Which quadrant is -570⁰

• I
• II
• III
• IV

What is the degree equivalent to -135^o

• 225^o
• 215^o
• 235^o
• 45^o

Formula [Reference angle = Actual angle - 180] is for

• quadrant 1

• quadrant 2

• quadrant 3

• quadrant 4

What is the reference angle for 30 degrees?

• 70 degrees
• 30 degrees
• 150 degrees
• 330 degrees

What is the reference angle for -30 degrees?

• 150 degrees
• 30 degrees
• 80 degrees
• 60 degrees