$$0 \leq \operatorname { a r g } ( \frac { z - 4 } { 1 + i } ) \leq \frac { \pi } { 6 }$$
$arg(\left(\frac{1}{2}-\frac{1}{2}i\right)z+\left(-2+2i\right))\leq \frac{\pi }{6}$
