kidusbk

range = 8/3 max-height range = (U^2sin2theta)/g max height = (u^2sin^2theta)2g so, (U^2sin2theta)/g = 8/3 (u^2sin^2theta)2g things that cancel out cancel out like u^2 , g and left with sin2theta = 8/3 sin^2thea and sin2theta = 2sin theta x cos theta from...