Evaluate Trigonometric Functions Using Unit Circle

Evaluate the trigonometric functions using your activity.

• 0

• 1

• -1

• undefined

Evaluate the trigonometric functions using your activity.

• -2

Evaluate the trigonometric functions using your activity.

• -1

• 1

• 1st

• 2nd

• 3rd

• 4th

cos (4π/3)

• √2 / 2

• 2√3 / 3

• -1 / 2

• Undefined

sin 2π/3

• 1/2

• -1/2

• √3/2

• -√3/2

sin π/4

• √2∕2

• 1/2

• √3/2

• 0

csc π

• -1

• 0

• 1

• Undefined

sin (17π/6)

• -√3 / 2

• 1 / 2

• √2 / 2

• √3 / 2