+118609 on this calc use arc tan
It is the same as inverse tan
atan(5.5/9.3)=
$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}^{\!\!\mathtt{-1}}{\left({\frac{{\mathtt{5.5}}}{{\mathtt{9.3}}}}\right)} = {\mathtt{30.599\: \!978\: \!693\: \!209^{\circ}}}$$
+118609 on this calc use arc tan
It is the same as inverse tan
atan(5.5/9.3)=
$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}^{\!\!\mathtt{-1}}{\left({\frac{{\mathtt{5.5}}}{{\mathtt{9.3}}}}\right)} = {\mathtt{30.599\: \!978\: \!693\: \!209^{\circ}}}$$
