Unit circle practice

Based on your unit circle sin(90^o)=

• 1/2

• 0

• -1

• 1

sin(5π/3)=

• 1/2

• -√3/2

• √3/2

• -1/2

cos 4π/3

• -√3/2

• √3/2

• 1/2

• -1/2

tan 7π/4

• -1

• 1

• √2/2

• undefined

What radian measure corresponds to the point 

• π/4

• 3π/2

• 5π/4

• 7π/3

• -1

• 0

• undefined

• √3

Which quadrant is 2π/3 in?

• I

• II

• III

• IV

cos 5π/6

• -1/2

• 1/2

• √3/2

• -√3/2

What is a complete circle in radians?

• π

• 2π

• 1/2 π

• 1

For what angles are sine and cosine the same?

• 0^o

• 45^o and 135⁰

• 45^o and 225⁰

• 45^o and 315⁰