Question

The angle of depression of points P

on the ground from the top T of a building is 23.6, if the distance from P to the foot of the building is 50m. Calculate the height of the building. Correct to the nearest metre.

Answer 1

The height of the building is approximately 55 meters.

Explanation:

Let's call the height of the building "h" and the distance from point P to the foot of the building "d".

According to the problem, we have:

d = 50m

T = 23.6m

Using the Pythagorean theorem, we know that:

h^2 = T^2 + d^2

Substituting the values we have:

h^2 = (23.6m)^2 + (50m)^2

h^2 = 556.96m^2 + 2500m^2

h^2 = 3056.96m^2

Taking the square root of both sides, we get:

h = sqrt(3056.96m^2)

h = 55.28m

Rounding to the nearest meter, we get:

h ≈ 55m

Therefore, the height of the building is approximately 55 meters.