tan-1 70/10

Thanks Civonamzuk   

or

$${\frac{\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}^{\!\!\mathtt{-1}}{\left({\mathtt{70}}\right)}}{{\mathtt{10}}}} = {\mathtt{8.918\: \!154\: \!453\: \!831\: \!1}}$$

tan-1 70 over 10

70/10=7

tan^-1 (7) = 81.87^o

Agreed!  This is one of those questions that makes you ask yourself: what did a poet want to say...?