Positive and Negative Angles

What is the positive angle equivalent to -90° (this means find a positive coterminal angle)

• 90°

• 180°

• 270°

• There is no equivalent

What is the positive angle equivalent of -135° (this means find a positive coterminal angle)

• 135°

• 225°

• 235°

• 325°

What is the positive angle equivalent of -236° (this means find a positive coterminal angle)

• 236°

• 224°

• 134°

• 124°

What is the positive angle equivalent of -390° (this means find a positive coterminal angle)

• 30°

• 45°

• 60°

• 390°

What is the positive angle equivalent of -540° (this means find a positive coterminal angle)

• 180°

• 90°

• 270°

• 135°

What is the positive angle equivalent of -275° (this means find a positive coterminal angle)

• 85°

• 95°

• 195°

• 275°

What is the positive angle equivalent of -600° (this means find a positive coterminal angle)

• 120°

• 160°

• 180°

• 150°

What is the positive angle equivalent of -800° (this means find a positive coterminal angle)

• 280°

• 180°

• 260°

• 270°

What is -90° in radians? (Use your unit circle to help you)

• π/2

• -π/2

• -π/4

• -3π/2

What is -135° in radians? (Use your unit circle to help you)

• 3π/4

• -3π/4

• -7π/4

• -5π/4