Thread: How to find the measure of angle theta

Can someone explain the steps in finding angle theta using:

arctan(θ) = -2.1 and 90° < θ < 180°

Thanks!

Originally Posted by drpepper

Can someone explain the steps in finding angle theta using:

arctan(θ) = -2.1 and 90° < θ < 180°

Thanks!

I believe your notation is incorrect ...



solving for so that it ends up in quadrant II



punch the right side into your calculator

Oops, yeah, it was supposed to be just the tangent.

Thanks for the help!