Prop or pillar roots are

Prop roots are :-

Prop roots are :-

Supply the appropriate scientific term for Pillar like roots appearing from large horizontal branches.

Two pillars of equal heights are on the either side of a road, which is 150 metre wide. The angles of elevation of the top of the pillars are 60^@ and 30^@ respectively at a point on the road between the pillars. Find the height of each pillar.