$a)\frac{5\text{min}}{{\sout{60}}^1\text{min}}\cdot \sout{{360}^o}{6}^o=5\cdot 6^o={30}^o$

$b)\frac{35\text{min}}{{\sout{60}}^1\text{min}}\cdot \sout{{360}^o}{6}^o=35\cdot 6^o={210}^o$

$c)\frac{50\text{min}}{{\sout{60}}^1\text{min}}\cdot \sout{{360}^o}{6}^o=50\cdot 6^o={300}^o$