Exact Unit Circle Values

√3/2

• -√3/2

• √3/2

• ½

• -½

• √3
• √3/3
• √3/2
• 1

tan(3π∕2)=

• 0

• 1

• -1 

• undefined

tan(0)=

• 0

• 1

• -1 

• undefined

tan(3π∕4)=

• 0

• 1

• -1 

• undefined

csc x

sec x

cot x

tan x

• csc x

• sec x

• cot x

• tan x

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 sin?

• y

• x

• x/y

• y/x

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

• y

• x

• x/y

• y/x

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

• y/r

• x/r

• r/y

• y/x