Chapter 9 Review

Find the length of the missing side. 

• 25 cm
• 42 cm
• 52 cm
• 48 cm

 Find side AB?

• 20 m
• 5 m
• 11.54 m
• 8.66 m

What is a complete circle in radians?

• π
• 2π
• 1/2 π
• 1

What is the value of sine at 210°?

• 1/2

• -1/2

• √3 / 2

• -√3 / 2

sin π/4

• √2∕2
• 1/2
• √3/2
• 0

sin 2π/3

• 1/2
• -1/2
• √3/2
• -√3/2

What are the exact coordinates of 3π/4 on the unit circle?

• (−√2∕2, √2∕2)

• (−√2∕2, −√2∕2)

• (−√3∕2, −√2∕2)

• (√2∕2, −√2∕2)

Based on your unit circle cos(0^o)=

• 1
• 0
• -1
• 1/2

What is the tan of 3π/2?

• -√3
• √3/3
• -1
• Undefined

The __________ represents half the distance between the max and min of a sine or cosine graph. 

• Period
• Frequency
• Extreme Values
• Amplitude