Live Quiz - Math 115A

From an airplane at an altitude of 1200 m, the angle of depression to a building on the ground measures 28°. Find the distance from the plane to the building.

• x = 2265 m

• x = 2356 m

• x = 2256 m

• x = 2365 m

From a point on the ground 12 ft from the base of a flagpole, the angle of elevation of the top of the pole measures 53°. How tall is the flagpole?

• 17.9

• 16.9

• 18.9

• 15.9

From a point 80 m from the base of a tower, the angle of elevation to the top of the tower is 28°. How tall is the tower?

• 53 m

• 43 m

• 63 m

• 73 m

A ladder that is 20 ft. long is leaning against the side of a building. If the angle formed between the ladder and the ground is 75°, how far is the bottom of the ladder from the base of the building?

• 5 ft

• 3 ft

• 7 ft

• 10 ft

When the sun is 62° above the horizon, a building casts a shadow 18 m long. How tall is the building?

• 30 m

• 34 m

• 37 m

• 38 m

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

Find the length of side AB.

• 10

• 8

• 6.1

• 4.9

What is the measure of angle A?

• $58\degree$

• $61\degree$

• $78\degree$

• $74\degree$

Solve for x.

• 21.4

• 32.2

• 34.5

• 41.6

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity