What are the steps to calculate the apogee of rockets?

To calculate the apogee of a rocket, first determine the initial velocity and the angle of launch. Then, use the equations of motion, considering gravitational acceleration, to analyze the rocket's trajectory. The apogee can be calculated using the formula ( h = \frac{v^2 \sin^2(\theta)}{2g} ), where ( v ) is the initial velocity, ( \theta ) is the launch angle, and ( g ) is the acceleration due to gravity. Finally, account for any atmospheric drag or propulsion effects if applicable for a more accurate result.