Упростите выражение
[tex]\displaystyle
\sqrt{ \frac{1-\cos\alpha}{1+\cos\alpha}} +\sqrt{ \frac{1-\cos\alpha}{1-\cos\alpha} }[/tex]
[tex]\displaystyle
\sqrt{ \frac{1-\cos\alpha}{1+\cos\alpha}} +\sqrt{ \frac{1-\cos\alpha}{1-\cos\alpha} }[/tex]
Answers & Comments
Verified answer