you will learn it in Application of Differentiation (12th class topic)

i think the answer should be pl/3

whr p is rho

you can write it as sinx.sinx

= {1 - (cosx)^2}^1/2*sinx

then substitue cosx = t and proceed

sarthak your answer is right

height = VT - V*sq.root of 2VT/g

Solution : - Take 4 cases : Case 1: Vt'=height

Case 2 : t" = V/g

Case 3 : t"' = V/g

Case 4 : t""= V' - V/g and V' = sq. root(2gh + V^2)

Now sovle these equations:-

 t' + t" + t"' + t"" = T and V' = sq. root(2gh + V^2)

to get answer