Unit Circle Practice

Front

What is the conversion formula from radians to degrees?

Back

Degrees = Radians × (180/π)

Front

What is 7π/4 radians in degrees?

Back

315 degrees

Front

What is the cosine of an angle on the unit circle?

Back

The cosine of an angle is the x-coordinate of the corresponding point on the unit circle.

Front

What is the sine of an angle on the unit circle?

Back

The sine of an angle is the y-coordinate of the corresponding point on the unit circle.

Front

What is the range of angles for Quadrant I?

Back

0 to 90 degrees (0 to π/2 radians)

Front

What is the range of angles for Quadrant II?

Back

90 to 180 degrees (π/2 to π radians)

Front

What is the range of angles for Quadrant III?

Back

180 to 270 degrees (π to 3π/2 radians)

Front

What is the range of angles for Quadrant IV?

Back

270 to 360 degrees (3π/2 to 2π radians)

Front

What is the terminal side of an angle?

Back

The terminal side of an angle is the position of the angle after it has been rotated from the initial side.

Front

What is the reference angle for an angle in Quadrant II?

Back

Reference angle = 180 degrees - the angle.