1.

Aparticle just clears a wall of height b at distance a and strikes the groundat a distance c from the point of projection. The angle of projection is(1) tan^(-1)b/(a c)(2) "45"^o(3) tan^(-1)(b c)/(a(c-a)(4) tan^(-1)(b c)/a

Answer»

4
4.91
4.19
100

Answer :B


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