# Find the Cartesian equation of the locus of #arg((z-4)/(z+4))=pi/4#?

##
Thanks!

Thanks!

##### 2 Answers

This equation is circle with centre

#### Explanation:

Set

After taking tangent both sides,

This equation describes a circle with its centre

#### Explanation:

We know that

then

now

NOTE

From

making

and knowing that