Question

A toy rocket is fired at v0 = 41.2 m/s at an angle of è = 73.8 degrees with respect to the horizontal on flat level ground. Assuming that air resistance is negligible, what is its maximum height (H) and how far (R) will the rocket have traveled in the horizontal direction by the time it lands?
Steve
wikipedia's article on "trajectory" will provide you all the formulae you need for this.