3.4 Exercise 30

Derive $R = \frac{v_{0}^{2} \text{sin} 2θ_{0}}{g}$ for the range of a projectile on level ground by finding the time $t$ at which $y$ becomes zero and substituting this value of $t$ into the expression for $x - x_{0}$, noting that $R = x - x_{0}$