geometry - Convert a direction into an angle on our compass

I have a new position vector and old x and z coordinates and I need to determine the angle traveled. So far I am getting the slopes absolute value and then using that to generate an angle. Based on

Converting Compass Degrees to Radians · Wilson Ding

Lesson Explainer: Rotations about a Point

How to Calculate Bearings –

ohhsmrtb / Compass Bearing Tutorial

Simplified Tacking Lines for Better Judgments - SailZing

Vector Angle Conversion – GeoGebra

Lesson Explainer: Translations

270 Degree Angle - Construction, in Radians, Examples

Maths Help: Finding Bearings - VividMath.com

Degrees of Turn Four Compass Points Activity (teacher made)

Remote Sensing, Free Full-Text

math - Compass Angle/Rotation Angle For Tracking Direction to X,Y

Getting to the Point - Lesson - TeachEngineering