From a point on ground the angle of elevation of top of building and of helicopter hovering at some height - Maths - Some Applications of Trigonometry

Question

From a point on ground the angle of elevation of top of building
and of helicopter hovering at some height over top of building are
alpha and beta respectively Prove that vertical distance between
helicopter and top of building is h(tan beta -tan alpha )/tan alpha
where h=height of building

Sakshi Agarwal · Accepted Answer

From a point on ground the angle of elevation of top of building and of helicopter hovering at some height over top of building are alpha and beta respectively. Prove that vertical distance between helicopter and top of building is h(tan beta -tan alpha )/tan alpha where h=height of building.