# How do you graph #theta=-840^circ#?

##### 1 Answer

Mar 8, 2017

graph{-tan(2*pi/3)*x [-10, 10, -5, 5]}

#### Explanation:

First you simplify the angle so it's between 0 and 360º

So we have the equation

That means it's 120 degrees clockwise from the

Since we only have an angle, the radius can be any real value, so our equation describes a line. Just find the appropriate angle on the graph paper and trace a line through it.

Or, if you only have rectangular graph paper / no protactor nearby, calculate the rate of growth of the line (