A man walking briskly in rain with speed v must slant his umbrella forward making an angle theta with the vertical. A student derives the following relation between theta and v as tan theta=v and checks that therelation has a correct limit when vto0,thetato0 as expected. Do you think the relation can be correct? If not guess out the correct relation.

A man walking briskly in rain with speed v must slant his umbrella for

1.	A man walking briskly in rain with speed v must slant his umbrella forward making an angle theta with the vertical. A student derives the following relation between theta and v as tan theta=v and checks that therelation has a correct limit when vto0,thetato0 as expected. Do you think the relation can be correct? If not guess out the correct relation.
Answer» Answer :`tan theta` MUST be dimensionless. The correct FORMULA is `tan theta=v//u` where u is the initial velocity of the RAIN.