A particle aimed at a target projected w...

A particle aimed at a target projected with an angle `15^(@)` with the horizontal is short of the target by 10m .If projected with an angle of `45^(@)` is away from the target by 15m then the angle of projection to hit the target is

`1/2sin ^(-1)(1/10)`

`1/2sin ^(-1)(3/10)`

`1/2sin ^(-1)(9/10)`

`1/2sin ^(-1)(7/10)`

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