Question

From a point A, 40 metres from the base of a building B, the angle of elevation to the top of the building C is 51 degree, and to the top of the flagpole D on top of the building is 56 degree. Find the height of the flagpole.

Answer 1

As a start, make a rough sketch

Answer 2

btw nice username :)

Answer 3

Thank you, yes I am trying to sketch it :)))