Question

cos ((π/3)+x)≤0 решите пожалуста ❤

Answer 1

$cos(frac{pi}{3}+x)leq 0\\-frac{pi }{2}+2pi nleq frac{pi}{3}+xleq frac{pi}{2}+2pi n; ,; nin Z\\-frac{5pi }{6}+2pi nleq xleq frac{pi}{6}+2pi n; ,; nin Z$