Vectors in 3 Dimensions
Geogebra links:
Angle between a vector and the coordinate axes: https://www.geogebra.org/m/khhwrnHz
Vector Equation of a line: https://www.geogebra.org/m/gGEvauyc
Spheres in 3D: https://www.geogebra.org/m/SQeMqBrM
Visualising the axes: https://www.geogebra.org/m/a9nWjS9U