Unit Circle Practice

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

• 1
• 0
• -1
• 1/2

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

• 1/2
• 0
• -1
• 1

sin(5π/3)=

• 1/2
• -√3/2
• √3/2
• -1/2

sin(7π/4)

• 1/2
• -√2/2
• √2/2
• -1/2

sin(3π/2)

• 0
• 1
• -1
• 1/2

What is the value of sine at 210°?

• 1/2

• -1/2

• √3 / 2

• -√3 / 2

What is the value of cosine at 135°?

• 0

• 1/2

• √2 /2

• -√2 /2

What is half a circle in radians?

• π/4
• π
• 2π
• π/2

cos 5π/6

• -1/2
• 1/2
• √3/2
• -√3/2

Identify the Positive angle in both radians and degrees that represent point H.

• $150\degree,\ \frac{5\pi}{6}$

• $135\degree,\ \frac{3\pi}{4}$

• $180\degree,\ \pi$

• $210\degree,\ \frac{7\pi}{6}$