The maximum horizontal range is obtained when _____.

1. $$\Theta=45^{\circ}$$
2. $$\Theta=30^{\circ}$$
3. $$\Theta=90^{\circ}$$
4. $$\Theta=180^{\circ}$$

Answer: Option 2 = $$\Theta=45^{\circ}$$

Explanation:

The horizontal range is given by the equation

The range is maximum when Sin 2θ is maximum, i.e., when θ=45o