1.

Two pegs A and B thrown with speeds in the ratio 1:3 acquired the same heights. If A is thrown at an angle of \[30{}^\circ \] with the horizontal, the angle of projection of B will be

A. \[0{}^\circ \]                
B.        \[si{{n}^{-1}}\left( \frac{1}{8} \right)\]
C. \[si{{n}^{-1}}\left( \frac{1}{6} \right)\]     
D.        \[si{{n}^{-1}}\left( \frac{1}{2} \right)\]
Answer» D.        \[si{{n}^{-1}}\left( \frac{1}{2} \right)\]


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