(A) : In javelin throw, the athlete throws the projectile at an angle slightly more than 45^o
(R) : The maximum range does not depend upon angle of projection.

$\mathrm{R}=\frac{{\mathrm{u}}^2\sin 2\mathrm{\theta }}{\mathrm{g}}$

$\mathrm{for} \mathrm{\theta }={45}^{\mathrm{o}}, {\mathrm{R}}_{\max }=\frac{{\mathrm{u}}^2}{\mathrm{g}}$

In javelin throw, the athlete should throw the projectile at an angle of 45^o to throw at maximum range.

Maximum range is at 45^o of projection. Hence, it depends on angle of projection.

Both (A) and (R) are false.