# Math Help - Simple trigonometric equation can you help?

1. ## Simple trigonometric equation can you help?

tan theta = - root 3 is the question, obviously I'm trying to find theta here.

I used inverse tan root 3 to get a value of 60, and then drew a trigonometric graph with active tan and got 150 and 300 for values of theta. Can anyone confirm this is right?

2. $\arctan(-\sqrt{3}) = -60^{\circ}
$

$-60^{\circ} + 360^{\circ} = 300^{\circ}$

other angle is back in quad II, 180 degrees out

$300^{\circ} - 180^{\circ} = 120^{\circ}$