1.

In a projectile motion, the maximum height reached equals to the horizontal range covered by the body, the angle of projection with the horizontal equals to

Answer»

`tan^-1 1`
`tan^-1` 1/4
`tan^-1` 2
`tan^-1`(4)

SOLUTION :MAXIMUM height =`(u^2 sin^2 theta)/(2G)`
HORIZONTAL Range = `(u^2 sin2 theta)/(g)`
GIVEN `(u^2 sin^2 theta)/(2g)` = `(u^2 sin2 theta)/(g)` or `sintheta = 2 sin 2 theta` or `tantheta` = 4 or `theta tan^-1(4)`.


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