Unit Circle Trig 2

Front

What is the definition of the unit circle?

Back

The unit circle is a circle with a radius of 1 centered at the origin (0,0) in the coordinate plane. It is used to define trigonometric functions.

Front

What are the coordinates of the point on the unit circle at an angle of 0 radians?

Back

The coordinates are (1, 0).

Front

What angle corresponds with the ordered pair (0, 1) on the unit circle?

Back

Front

Back

The coordinates are (0, 1).

Front

What angle corresponds with the ordered pair (-1, 0) on the unit circle?

Back

Front

Back

The coordinates are (-1, 0).

Front

What angle corresponds with the ordered pair (0, -1) on the unit circle?

Back

Front

Back

The coordinates are (0, -1).

Front

What angle corresponds with the ordered pair (1, 0) on the unit circle?

Back

The angle is 0 radians.

Front

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

Back

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