Unit Circle Angles

Front

Convert 150° to radians.

Back

5π/6

Front

Find a coterminal angle for 975° between 0° and 360°.

Back

255°

Front

If θ is an angle in Quadrant IV, which trig ratios will be positive?

Back

cos θ

Front

Convert 100° to radians.

Back

5π/9

Front

What is 7π/4 radians in degrees?

Back

315°

Front

What is the definition of a coterminal angle?

Back

Coterminal angles are angles that share the same terminal side when drawn in standard position.

Front

How do you convert degrees to radians?

Back

Multiply the degree measure by π/180.

Front

How do you convert radians to degrees?

Back

Multiply the radian measure by 180/π.

Front

What is the reference angle for 150°?

Back

30°

Front

What are the signs of the trigonometric functions in Quadrant IV?

Back

Only cos θ is positive.