Physics - Error Question with Solution | TestHub

Two balls are thrown from the top of a cliff of unknown height with equal initial speed $v_0=10\mathrm{m}/\mathrm{s}$. One is projected at an angle $\theta =45^{\circ }$ above horizontal and second is projected at the same angle below horizontal. What is the difference between maximum horizontal distances travelled by the projectiles (in m )? $\left(g=10\mathrm{m}/{\mathrm{s}}^2\right)$