Circular functions and trigonometry

cos (π/2)

• 0
• 1/2
• 1
• undefined

What is 7π/4 radians in degrees?

• 300
• 135
• 315
• 45

In the function y=asin(bx)+k, what does "k" represent?

• vertical shift
• amplitude
• horizontal shift
• phase shift

sin (π/3)

• 1/2
• √3/2
• √2/2
• 2/√3

a is a(n)

• angle of elevation
• angle of depression
• both
• neither

Tanθ equals

• sinθ/cotθ
• sinθ/cosθ
• cosθ/sinθ
• secθ/cosθ

Find the value of x.

• 18
• 18√3
• 36√3
• 12

What is the midline?
y=-3sin(4x+π)-3

• 3
• -3
• 6
• 2

What trigonometric ratio would be used to find the distance from the ship to the plane?

• sine
• cosine
• tangent
• inverse sine

sec (-10π/3)

• -1
• 1/2
• -2
• √2