Towards Change!

As observed from the top of a light house,100m above sea level,the angle of depression of a ship,sailing directly towards it,changes from 30 o to 450. Determine the distance travelled by the ship during the period of observation.

Protoxylem is towards pith and metaaxylem is towards periphery in

Reactivity Towards Hydrogen

The reactivity of alkene towards hydrogen is :

A plane is piloted from a point towards South. The direction is changed first towards right and then towards left. In which direction is the plane from the starting point?

As observed from the top of a light house, 100 m high above sea level, the angles of depression of a ship, sailing sirectly towards it, changes from 30^(@)" and "90^(@) .