Let us consider the
following problems:
(i)
To find the width of a river (particularly, when it is difficult to cross the river) (ii)
To find the optimal angle in case of shot-put (by considering the variables
such as : the height of the thrower, resistance of the media, acceleration due to
gravity etc ) (iii)
To find the height of a tower (particularly, when it is not possible to reach the top
of the tower)