3.A pilot is flying over a straight highway. He determines the angles of depressions to two mileposts that are 3.8 km apart, to be 58 and 30. Find the distance from the plane to point A.

2.1 km

Step-by-step explanation:

Let's say the distance between the plane and the ground is y.

The horizontal distance between the plane and A is:

tan 58° = y / x₁

x₁ = y / tan 58°

x₁ = 0.625 y

The horizontal distance between the plane and B is:

tan 30° = y / x₂

x₂ = y / tan 30°

x₂ = 1.732 y

The difference between them is 3.8 km.

x₂ − x₁ = 3.8

1.732 y − 0.625 y = 3.8

1.107 y = 3.8

y = 3.432

The horizontal distance between the plane and point A is therefore:

x₁ = 0.625 × 3.432

x₁ = 2.145

Rounded, the plane is 2.1 km from point A.

can you me with homework?

step-by-step explanation:

answer: the dogs need to shift their focus to human scent.

its because the dogs being trained are for search and rescue thus they need to be able to track humans and their specific scent