+33616 If tan(A)=0.333 then A = tan-1(0.333) (on a calculator tan-1 is usually represented by atan) so:
$${\mathtt{A}} = \underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}^{\!\!\mathtt{-1}}{\left({\mathtt{0.333}}\right)} \Rightarrow {\mathtt{A}} = {\mathtt{18.417\: \!758\: \!370\: \!539^{\circ}}}$$
A ≈18.4° This is the result in first quadrant.
Because tan also has the same value in the 3rd quadrant the solution could also be A = 180°+18.4° = 198.4°
+33616 If tan(A)=0.333 then A = tan-1(0.333) (on a calculator tan-1 is usually represented by atan) so:
$${\mathtt{A}} = \underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}^{\!\!\mathtt{-1}}{\left({\mathtt{0.333}}\right)} \Rightarrow {\mathtt{A}} = {\mathtt{18.417\: \!758\: \!370\: \!539^{\circ}}}$$
A ≈18.4° This is the result in first quadrant.
Because tan also has the same value in the 3rd quadrant the solution could also be A = 180°+18.4° = 198.4°
