Question

$\huge\sf\underline{Question:-}$

$\begin{gathered} \sf \: \sqrt{ \dfrac{1 - \cos(\alpha) }{1 + \cos(\alpha) } } \\ \\ = \sf \sqrt{ \dfrac{\bigg(1 - \cos(\alpha)\bigg)\bigg(1 + \cos(\alpha) \bigg) }{\bigg(1 + \cos(\alpha)\bigg)\bigg(1 + \cos(\alpha) \bigg) } }\end{gathered}$​

Answer 1

√2-sina-cosa

sina-cosa √²-√² ( 724 + / 2000) sina cosa √2 cosa 1 sina+ 1-cos/a sin 2sin² a 2 4 2 8 2 sin 4 8 2 8 sin 2 a 2 8 A 8