c
\(\begin{array}{l} For\,same\,range\,angle\,of\,projection\,will\\ be\,\theta \,will\,be\,\theta \,\& \,90 - \theta \\ R\,\, = \,\frac{{{u^2}2\sin \theta \cos \theta }}{g}\\ {h_1} = \frac{{{u^2}{{\sin }^2}\theta }}{g}\\ {h_2} = \frac{{{u^2}\sin {\,^2}\left( {90 - \theta } \right)}}{g}\\ \frac{{{R^2}}}{{{h_1}{h_2}}} = 16 \end{array}\)
