Question

Сравните числа !!!! Математика. 11 класс

Answer 1

$\displaystyle sin(-\frac{\pi }{5} )=- sin(\frac{\pi }{5} )\\\\\displaystyle sin(\frac{\pi }{5} )>sin(-\frac{\pi }{5} )$

$\displaystyle cos(-\frac{\pi }{12} )=cos (\frac{\pi }{12} )\\\\\displaystyle cos (\frac{\pi }{12} )= cos (-\frac{\pi }{12} )$