wait is that tan -1 radian? I think so. Anyways this can be done in the calculator. Just go to the home menu and type tan which is on the left side of the calculator bottom and then type in 11/6 or press the buttons anyways do sorry that i had to explain that.....We have to give FULL DETAILED ANSWERS here but the soultion is down here -2.8552474952.
This is asking for tan-1(11/6) which can be done on the calculator (atan(11/6))
$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}^{\!\!\mathtt{-1}}{\left({\frac{{\mathtt{11}}}{{\mathtt{6}}}}\right)} = {\mathtt{61.389\: \!540\: \!334\: \!035^{\circ}}}$$
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