Question

помогите решить уравнение
cos^2(x-17π/2)=0

Answer 1

$cos^2left(x-frac{17pi}{2}right)=0;\ cosleft(x-frac{17pi}{2}right)=0;\ x-frac{17pi}{2}=frac{pi}{2}+pi n, nin Z;\ x=frac{pi}{2}+frac{17pi}{2}+pi n, nin Z;\ x=frac{pi+17pi}{2}+pi n,nin Z;\ x=frac{18pi}{2}+pi n, nin Z;\ x=9pi+pi n, n in z;\ 9+n=k, kin Z;\ x=pi k, kin Z$