Unit Circle Practice

Front

What is the value of cos(\frac{\pi}{6})?

Back

\frac{\sqrt{3}}{2}

Front

What is the value of sin(\frac{\pi}{2})?

Back

1

Front

What is the value of sin(90^o)?

Back

1

Front

What is the value of cos(\frac{\pi}{4})?

Back

\frac{\sqrt{2}}{2}

Front

In which quadrants is cosine positive?

Back

The 1st and 4th quadrants.

Front

Define the unit circle.

Back

A circle with a radius of 1 centered at the origin of a coordinate plane.

Front

What is the relationship between the angles in the unit circle and their sine and cosine values?

Back

The x-coordinate represents the cosine value and the y-coordinate represents the sine value.

Front

What is the value of cos(0^o)?

Back

1

Front

What is the value of sin(0^o)?

Back

0

Front

What is the value of cos(\frac{3\pi}{2})?

Back

0