Question

Гляньте пример$sin(5 pi /3 *cos pi x) =1/2$

Answer 1

$sin(frac{5pi}{3}*cospi*x)=frac{1}{2}\ frac{5pi}{3}cospi*x = frac{pi}{6}+2pi*n\ cospi*x=frac{1}{10}+frac{6n}{5}\ pi*x=arccos(frac{1}{10}+frac{6n}{5})\ x=frac{arccos(frac{1}{10}+frac{6n}{5})}{pi}$