A ball is projected with a speed of 2ms^...

A ball is projected with a speed of `2ms^(-1)` with respect to a trolley which is moving with `4ms^(-1)`, as shown in the figure. The angle at which ball is projected with respect to the horizontal in ground frame is

`tan^(-1)(sqrt((3)/(28)))`

`tan^(-1)((5)/(sqrt3))`

`sin^(-1)(sqrt((3)/(28)))`

`sin^(-1)((5)/(sqrt(28)))`

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