Unit Circle Practice

Front

What is a coterminal angle?

Back

Coterminal angles are angles that share the same terminal side when drawn in standard position. To find a coterminal angle, you can add or subtract multiples of 360 degrees (or 2π radians).

Front

Find a coterminal angle to 45 degrees.

Back

405 degrees is a coterminal angle to 45 degrees.

Front

How do you convert degrees to radians?

Back

Front

Convert 150 degrees to radians.

Back

Front

What is the formula for finding coterminal angles in radians?

Back

To find coterminal angles in radians, add or subtract multiples of 2π.

Front

Back

Front

How do you convert radians to degrees?

Back

Front

Back

Front

What is the sine of 270 degrees?

Back

The sine of 270 degrees is -1.

Front

What is the unit circle?

Back

The unit circle is a circle with a radius of 1 centered at the origin of the coordinate plane, used to define trigonometric functions.