A projectile has the same range $R$ for two angles of projection. If $T_1$ and $T_2$ be the times of flight in the two cases, then $R$ is

  • A

    $T_1T_2g$

  • B

    $\frac{T_1T_2g}{2}$

  • C

    $(T_1^2 + T_2^2)g$

  • D

    $\frac{(T_1^2 + T_2^2)}{2}g$

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