A particle thrown over a triangle from one end of a horizontal base falls on the other end of the
Channel: Doubtnut
Date: 2020-02-02

A particle thrown over a triangle from one end of a horizontal base falls on the other end of the base after grazing the vertex. If `alpha and beta` are the base angles of triangle and angle of projection is `theta`, then prove that `( tan theta = tan alpha + tan beta)`