(a) A tower and a building stand on the same horizontal level. From the point P at the bottom of the building, the angle of elevation of the top, T of the tower is 65°. From the top Q of the building, the angle of elevation of the point T is 25°. If the building is 20m high, calculate the distance PT. (b) Hence or otherwise, calculate the height of the tower. [Give your answers correct to 3 significant figures].
Explanation
(a) Also, Using sine rule, = (to 3 sig. fig) (b) Height of the tower = ST (to 3 sig. figs)
