Circular Trig Functions

If θ is an angle in standard position and r = √(x²+ y²), sin θ = __

• x/r
• y/r
• r/x
• y/x

If θ is an angle in standard position and r = √(x²+ y²), cos θ = __

• x/r
• y/r
• r/x
• y/x

If θ is an angle in standard position and r = √(x²+ y²), tan θ = __

• x/r
• y/r
• r/x
• y/x

If θ is an angle in Quadrant IV, which trig ratios will be positive

• sin θ
• cos θ
• tan θ
• cos θ and tan θ

If θ is an angle in Quadrant II, which trig ratios will be positive

• sin θ
• cos θ
• tan θ
• cos θ and sin θ

Let (-4, 3) be a point on the terminal side of θ.  Which of the following is FALSE?

• cos θ = -4/5
• tan θ = -3/4
• sin θ = 3/5
• cos θ = 4/5

The point (3, -4) is on the terminal side of θ.  Find cosθ.

• 3/5
• -3/5
• -3/4
• -4.5

The point (-2√5, 4) is on the terminal side of θ.  Find cscθ.

• -√5/3
• 2/3
• 3/2
• -(3√5)/5

The point (-2√2, 2√2) is on the terminal side of θ.  Find tanθ.

• -1
• 1
• √2
• -√2)/2

The point (9, -2) is on the terminal side of θ.  Find secθ.

• -2/√85)
• 9/√77
• -2/9
• √85)/9