# How to put the radian angle 3pi/8 point on a unit circle?

##### 1 Answer

Oct 16, 2015

See below

#### Explanation:

If you get what a

Let's go for recursive divisions. We know that

So,

We can also write

I'll try to identify this whole procedure with cardinal points:

#pi# angle#-># west pole;#pi/2# angle#-># north pole;#pi/4# angle#-># north-east;#pi/8# angle#-># east-north-east;

So,