Finding the 3 Rotation Angles of an Object relative to another point.

Element6

I have a weird problem I can't seem to figure out.

I am creating a 3D project;

In the project I am creating a Sphere of Radius r at Origin(0,0,0)

Then I am finding x number of points around the sphere that are equal distance apart; that is if I parameterize 6 points it will be 6 vectors returned at each axis both negative and positive. In most cases the number is like 11 or 12 the function I am using is the "Hypercube Rejection Method"

At each of these points, I am placing a "cone" which is oriented along the X-axis the points determine the center of the cone mesh.

I want to point the cone towards the origin.
How do I find the Angles of Rotation on all 3 axis per cone since they will all vary from their orientation of 90 Degrees off the X-Axis(yaw), 0 Degree off the Y-Axis(pitch) and 0 Degrees off the Z-Axis(roll).

The problem isn't a LookAt problem; it's a Pitch,Yaw, Roll degree calculation; based off of the origin and the center points of the meshes.