http://scholarcommons.usf.edu/cgi/viewcontent.cgi?article=4836&context=ujmm Ive been awake for thirty six hours and I don't know differential equations. Im trying to find the angle (theta) over the horizontal axis that is needed to hit a target that is 1000 meters away they are basically identical problems. I don't understand how to find initial velocity in the x and y components if I dont have an angle. Is there a final formula I can plug and chug to find theta? I am working on a problem for my calculus that is exactly like this, but I cant figure out how she arrived to her answer my grade depends heavily on this.