A lane runs at right angles out of a road a metres wide. Find how many metres wide the lane should beif it is just possible to carry a pole b metres long `(b> a)` from the road into the lane keeping it horizontal.

A can run 45 m while B runs 50 m. In a km race B beats Aby how many metres?

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.

A point source of light along a straight road is at a height of 'a' metres. A boy 'b' metres in height is walking along the road. How fast is his shadow increasing if he is walking away from the light at the rate of 'c' metres per minute ?

A point source of light along a straight road is at a height of 'a' metres. A boy 'b' metres in height is walking along the road. How fast is his shadow increasing if he is walking away from the light at the rate of 'c' metres per minute ?

A straight pole A subtends a right angle at a point B of another pole at a distance of 30 metres from A, the top of A being 60^(@) above the horizontal line joining the point B to the pole A. The length of the pole A is , in metres.

A straight pole A subtend a right angle at a point B of another pole at a distance of 30 metres from A the top of A being 60^(@) above the horizontal line joining the point B to the pole A. The length of the pole A is in metres.

A straight pole A subtends a right angle at a point B of another pole at a distance of 30 metres from A, the top of A being 60^(@) above the horizontal line joining the point B to the pole A.The length of the pole A is,in metres.