1/27 HW Quiz Sp Rt Tri, Trig Ratio, Solve Tri, Angle of Elev

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

(Notice the new information: angle of elevation is at the bottom, looking up. Angle of depression is at the top, looking down, but it is not inside the triangle with the 20°angle.)

• sine

• cosine

• tangent

• inverse sine

The angle of 12^o is a(n)

(New information: angle of elevation is at the bottom, looking up. Angle of depression is at the top, looking down. Neither is at the top and is complementary/sums to 90° to the angle of depression.)

• angle of elevation

• angle of depression

• neither

• both

a is a(n)

(New information: angle of elevation is at the bottom, looking up. Angle of depression is at the top, looking down. Neither is at the top and is complementary/sums to 90° to the angle of depression.)

• angle of elevation

• angle of depression

• both

• neither

X is a(n)

(New information: angle of elevation is at the bottom, looking up. Angle of depression is at the top, looking down. Neither is at the top and is complementary/sums to 90° to the angle of depression.)

• angle of elevation

• angle of depression

• neither

• both

The angle of 12^o is a(n)

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

Is 15° an angle of elevation or an angle of depression?

• Angle of Elevation

• Angle of Depression

• Neither

• Both

Use special right triangles to find the value of x

• 10
• 40
• 10√3
• 10√2

Use special right triangles to find the value of y 

• 10
• 40
• 10√3
• 10√2

Find the value of x.

• 18
• 18√3
• 36√3
• 12

What would you use to solve for a?

• sin
• cos
• tan
• Pythagorean theorem