unit circle

What is the radius of the unit circle?

• 0
• 1
• 1/2
• √2/2

At what point are sine and cosine the same value?

• 0
• 90
• 45
• 60

sinθ is positive in

• the 1st and 2nd quadrants
• the 1st and 3rd quadrants
• the 1st and 4th quadrants
• the 2nd and 3rd quadrants

cosθ is positive in

• the 1st and 2nd quadrants
• the 1st and 3rd quadrants
• the 1st and 4th quadrants
• the 2nd and 3rd quadrants

• -√3/2
• -½
• -√2/2
• -1

• √3/3
• √3
• 1
• undefined

• -1
• 0
• undefined
• √3

• ½
• √2/2
• √3/2
• 1

What is the reciprocal of the sine function?

• cosecant

• cosine

• secant

• cotangent

What is the value of cosine at 135

• 0
• 1/2
• √2 /2
• -√2 /2