A radio controlled plane, $P$, flies above a building, $BN$. $AN=100$ m and $AB=120$ m. The

Question

A radio controlled plane, $P$, flies above a building, $BN$. $AN=100$ m and $AB=120$ m. The angle of depression of $A$ from $P$ is $56{}^\circ$. Find the height, $PB$, of the plane above the top of the building. Express your answer correct to $3$ significant figures.

Accepted Answer

$PB=81.9\text{ m}$ (3 s.f.)

Problem involving Angle of Depression

Problem involving Angle of Depression

Video Solution:

Solution:

Solution locked