Question

тригонометрическое неравенство
(желательно по графику)
$cos(1.5x + frac{ pi }{6} ) textgreater frac{ sqrt{3} }{2}$

Answer 1

$cos(1,5x+frac{pi}{6}) textgreater frac{sqrt3}{2}\\-frac{pi}{6}+2pi n textless 1,5x+frac{pi}{6} textless frac{pi}{6}+2pi n; ,; nin Z\\-frac{pi}{3}+2pi n textless 1,5x textless 2pi n; ,; nin Z\\-frac{2pi}{9}+frac{4pi n}{3} textless x textless frac{4pi n}{3}; ,; nin Z$