Find all solutions on the interval $\displaystyle {\left[{0}^{\circ},{360}^{\circ}\right)}$. Use exact values. 

 $\displaystyle {4}{\cos{{x}}}+{4}{\cos{{x}}}{\tan{{x}}}={0}$ 

Separate multiple solutions with a comma. If there are no solutions please enter, "no solution" exactly.