In projectile motion, the total time of flight is determined by the vertical component of the initial velocity and is given by $\frac{2v_{o\sin\theta}}{g}$, not $\frac{v_{o\cos\theta}}{g}$. The maximum height is correctly expressed as $\frac{v_{o}^2\sin^2\theta}{2g}$, which is derived from the vertical motion equations. The range formula is $\frac{v_{o}^2\sin2\theta}{g}$, confirming that only the statement regarding maximum height is accurate.