Exact Values of Unit Circle

Choose the best match for the graph.

• 30^o

• 45^o

• 60^o

• 90^o

Based on the unit circle, what is the value of tan?

• y/r

• x/r

• r/y

• y/x

Choose the best match for the graph.

• 30^o

• 45^o

• 60^o

• 90^o

Choose the best match for the graph.

• 45^o

• 90^o

• 135^o

• 180^o

Based on the unit circle, what is the value of sin?

• y

• x

• x/y

• y/x

What is the measure of the given angle?

• 17pi/4

• 9pi/4

• -pi/4

• -7pi/4

What is the value of sine at 210?

• 1/2

• -1/2

• √3 / 2

• -√3 / 2

What is the value of cosine at 315

• 0

• 1

• √2 / 2

• -√2 /2

sin 2π/3

• 1/2

• -1/2

• √3/2

• -√3/2

tan 7π/4

• -1

• 1

• √2/2

• undefined