How do I pick random positions within a circle

I'm using this formula but It's actually picking in a square area.

(cos(random(360)) * radius) + posx

(sin(random(360)) * radius) + posy

posx and posy is the center, which is player's position.

radius is the attacking range of the enemy.

The goal is to pick random destinations but within attacking range of the enemy, so he can walk around while his attack is in cooldown.

Of course! Even math not being my strongest side I should have seen this lol. Thanks newt

edit: here is the example capx I've made so other people can use it. It is in c2 so people without c3 can use it too.

drive.google.com/open