UNIT CIRCLE

Front

What is 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 0 degrees?

Back

(1, 0)

Front

What is the value of sine at 90 degrees?

Back

1

Front

What is the value of cosine at 0 degrees?

Back

1

Front

What is the value of sine at 180 degrees?

Back

0

Front

What is the value of cosine at 360 degrees?

Back

1

Front

What is the value of sine at 270 degrees?

Back

-1

Front

What is the value of cosine at 45 degrees?

Back

√2 / 2

Front

What is the value of sine at 45 degrees?

Back

√2 / 2

Front

What is the value of sine at 30 degrees?

Back

1/2