Radians & the Unit Circle REVIEW

Front

What is a radian?

Back

A radian is a unit of angular measure defined as the angle subtended at the center of a circle by an arc equal in length to the radius of the circle.

Front

What is the relationship between degrees and radians?

Back

Front

What is the unit circle?

Back

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

Front

Back

Front

Back

Front

Back

Front

Back

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.

Front

Back

Front

What is the length of the hypotenuse in a 30-60-90 triangle if the shorter leg is 4?

Back

The hypotenuse is 8.