Find the Exact Value of the Function Using Trigonometric Identities

sin π/4

• √2∕2
• 1/2
• √3/2
• 0

cos 5π/6

• -1/2
• 1/2
• √3/2
• -√3/2

tan 7π/4

• -1
• 1
• √2/2
• undefined

cos 4π/3

• -√3/2
• √3/2
• 1/2
• -1/2

sin 7π/6

• 1/2
• -1/2
• √3/2
• -√3/2

How many degrees is ^π/₆ radians?

• 90°
• 60°
• 45°
• 30°

How many degrees is ^π/₄ radians?

• 30°
• 45°
• 60°
• 90°

How many degrees is ^π/₂ radians?

• 30°
• 45°
• 60°
• 90°

How many degrees is ^π/₃ radians?

• 30°
• 45°
• 60°
• 90°

What the coordinates of 180° on the unit circle?

• 0, 1
• 1, 0
• -1, 0
• 0, -1