Degrees and Quadrants

What is cos 30°?

• ^√3/₂

• ½

• ^√2/₂

• 1

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

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

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

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

sinθ is positive in

• the 1st and 2nd quadrants

• the 1st and 3rd quadrants

• the 1st and 4th quadrants

• the 2nd and 3rd quadrants

What is the exact value of cos 330°

• -1/2

• -√3/2

• 1/2

• √3/2

If sin A < 0 and  cos A < 0, then what quadrant is A in?

• I

• II

• III

• IV