4.1-4.3 Practice Test CW

Use trig ratios (SOH CAH TOA) to set up an equation and solve for x.

• 5.0

• 6.1

• 7.7

• 6.4

Name the quadrant where tangent is negative and cosine is also negative. (Hint: use the A-S-T-C mnemonic)

• I

• II

• III

• IV

What is 2π/9 in degrees?

• 20º
• 40⁰
• 18⁰
• none of these

Tags

CCSS.HSF.TF.A.1

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

(Hint: draw ref. triangle and label sides)

• cos θ = 4/5

• cot θ = -3/4

• sin θ = 3/5

• none of these are true

Find cos(150) =

(Hint: sketch angle and ref. triangle - need to label sides of special rt. triangle)

• 1/2

• -1/2

• √3/2

• -√3/2

• -√3

• √3

• -√3/3

• √3/3

Find cot (135)

(Hint: sketch angle and ref. triangle - need to label sides of special rt. triangle)

• √2/2

• - √2/2

• 1

• -1

Let cosθ = 8/17, where sinθ < 0.

Find the exact value of tanθ.

(Hint: Pick Quadrant,

then draw and label triangle)

• 15/8

• 8/15

• -8/15

• -15/8

Use trig ratios (SOH CAH TOA) to write an equation and solve for x.

• 12.1

• 7.2

• 6.0

• 8.9

Find the exact value of sin θ.

• 4√5
• √5/3
• √5/2
• cannot be determined

Tags

CCSS.HSG.SRT.C.6