Two towers are 150m distance apart. Height of one tower is thrice the other tower. The angle of elevation of top of tower from midpoint of their feets are complement to each other then the height of smaller tower is

(1) $25\sqrt3$ m

(2) $25\over\sqrt3$ m

(3) $75\sqrt3$ m

(4) 25 m

(1) $25\sqrt3$ m

(2) $25\over\sqrt3$ m

(3) $75\sqrt3$ m

(4) 25 m