IN QUESTION 16 i have a doubt how to select the velocity of man with respect to ground as in some question it is along the y axis and in some questions it is not along the y axis
man make angle (theta) with perpendicular to the direction of
flow of river ( in your language y axis) now use sine rule of properties of triangle
Here destination vertically opposite ...so if swim perpedicular
to the direction of flow of river(in your language) hecan never
reach destination but get drifted away...
Sir i dont know this property of triangle can you explain me by some other method
Ok i shall try...
Thankyou sir i got it