Asurvey team is trying to estimate the height of a mountain above a level plain. from one point on the plain, they observe that the angle of elevation to the top of the mountain is 28 ∘ . from a point 1000 feet closer to the mountain along the plain, they find that the angle of elevation is 30 ∘ .

The height of the mountain is 11650 ft.

At the angle of 28 degree apply the tangent law

tan28= Eq.1

At the angle of 30 degree apply the tangent law

tan30= Eq. (2)

On solving eq. (1) and Eq. (2)

The height of the mountain is h=11650 ft.

from

explanation:

wind is defined by the direction it blows from.   for example, a wind blowing from north to south is called a northerly wind.

i think the answer would be b