Evaluate Trig Functions on the Unit Circle

What is the measure of a complete circle in radians?

• π

• 2π

• 3π

• 4π

What is the value of cos 60°?

• 1/4

• 1/2

• 3/4

• 1

What is the value of sin (π/2)?

• 0

• 0.5

• 1

• 1.5

What is the value of sin (π/3)?

• 1/2

• √3/2

• √2/2

• 0

What is the value of cos (π/6)?

• 1/2

• √3/2

• √2/2

• 0

What is the value of sin 30°?

• 1/4

• 1/2

• 3/4

• 1

What is the value of tan (π/4)?

• 0

• 1

• √3

• ∞

What is the value of tan 60°?

• 1

• √3

• √2

• 2

What is the value of tan (0°)?

• 0

• 1

• undefined

• -1

What is the value of cos 45°?

• 1/2

• √2/2

• √3/2

• 0