posted by Physics .
I need some help getting a formula. I remember in class u get this really wierd looking equation like
I think this is what the equatin is when I'm asked to
"Derive a formula for the Range of a projectile based on Vi and the Launch angle, pheta. State when and why is this equation at a maximum."
I'm not exactly sure what it means by maximum or how to derrive the forumula. I think what I wrote above is what i am suppose to eventually get I'm just nore sure how to get that and what it means by maximum...