Flashcardizz Reference and Co-terminal Angles (3B)

Front

What are coterminal angles?

Back

Coterminal angles are angles that share the same terminal side when drawn in standard position. They can be found by adding or subtracting multiples of 360° (or 2π radians) from the original angle.

Front

How do you find a positive coterminal angle for a given angle?

Back

To find a positive coterminal angle, add 360° (or 2π radians) to the given angle until the result is positive.

Front

How do you find a negative coterminal angle for a given angle?

Back

To find a negative coterminal angle, subtract 360° (or 2π radians) from the given angle until the result is negative.

Front

What is the coterminal angle of 240°?

Back

The positive coterminal angle is 600° and the negative coterminal angle is -120°.

Front

What is the coterminal angle of 17π / 4 radians?

Back

The coterminal angle is π / 4 radians.

Front

In which quadrant is an angle of -570° located?

Back

The angle -570° is located in Quadrant II.

Front

What is the value of sin(-660°)?

Back

The value of sin(-660°) is √3/2.

Front

Which trigonometric function is positive in Quadrant IV?

Back

In Quadrant IV, the cosine function is positive.

Front

What is the range of angles for Quadrant I?

Back

Quadrant I contains angles from 0° to 90°.

Front

What is the range of angles for Quadrant II?

Back

Quadrant II contains angles from 90° to 180°.