Unit 4 Review Snow Day Assignment (2/20)

In a right triangle, if sin(35) = cos(θ), what is the value of θ?

• 35

• 90

• 55

• 45

If the angle between a support cable and the ground is 35°, and the cable is 12 meters long, how far is the anchor point from the base of the structure?

• 9.84 meters

• 6.89 meters

• 10.25 meters

• 7.12 meters

In a right triangle, if cos(θ) = 4/5, what two side lengths do you know?

• opp=4, hyp=5

• adj=4, hyp=5

• opp=4, adj=5

• adj=4, opp=5

Which trigonometric ratio equals opposite/hypotenuse?

• Tangent

• Cosine

• Sine

• None of the above

In a right triangle with angles of 30° and 60°, if the shortest side is 5 units, what is the length of the hypotenuse?

• 10 units

• 5√3 units

• 10√3 units

• 5 units

What is the measure of the angle if tan⁻¹(17/16)?

• 46.7°

• 50°

• 43.3°

• 55.4°

If angle A = 42° and side c = 7 in a right triangle, which formula would you use to find side a?

• a = 7/sin(42°)

• a = 7/cos(42°)

• a = 7/tan(42°)

• a = sin(42°)/7

13. In a right triangle, if one angle is 39°, what is the other non-right angle?
A. 29°
B. 19°
C. 51°
D. 90°

• A

• B

• C

• D

• A

• B

• C

• D

In a right triangle, what needs to be after the equal sign to make this equation true? sin(71) = ?
A. sin(19°)
B. cos(19°)
C. tan(19°)
D. cos(71°)

• A

• B

• C

• D