Coterminal Angles

Definition of Coterminal Angles

• Two angles drawn in standard position and have a common terminal side are called coterminal angles.

Examples of Coterminal Angles

• In the figure shown, 50° and 410° are coterminal angles.

Solved Example on Coterminal Angles

Identify coterminal angles among the given pairs.

Choices:

A. (60° , - 300°)

B. (60°, 410°)

C. (45°, 135°)

D. (60°, 240°)

Correct Answer: A

Solution:

Step 1: Coterminal angles are angles with the same terminal side.

Step 2: Of the given pairs, (60°, - 300°) is the correct pair.

Related Terms for Coterminal Angles

• Terminal Side
• Angle
• Standard Position

 

Additional Links for Coterminal Angles

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