Some Applications of Trigonometry

Distance, angle of elevation, and observer's height

To calculate an object's height, you need the distance from the object, the angle of elevation, and the observer's height.

Adding observer's height to calculated height

Total height is found by adding the observer's height to the calculated height from trigonometric calculations.

Height of the observer

In trigonometric height calculations, BD typically represents the height of the observer.

tan

Tangent (tan) is the trigonometric ratio that relates the opposite side to the adjacent side in a right-angled triangle.