Basically the Tesla 30 60 90 rule is the right and left hand rule of the Electro-Magnetic-RF spectrum. it is a way to see the 3D aspects of the fields. In motors and generators it is only the electro or magnetic forces that are used - and the 30 60 90 is the interaction of the fields as perceived by us in 3D and how we understand the rotation around the unit circle of the wave pattern around the field .
The reason I included RF is in a motor or generatior the antena is not stationaary but rotational and the force is used to rotate the 'antenna' to drive a dual electromagnetic force and not drive a RF wave.
There is also a rotational component to the RF signal:
For example the reflection of the signal of a dipole is relative to the distance above the groundwave of the antenna. This is related to the reflection of the groundwave back onto antenna and creates a vector space that limits the projection of the signal and changes as the wavephase interacts and reflects from the ground and reflects. The reflection can be visualized as a rotation of the wave in 3D field and that the rotation into 3D creates a vector space with the signal that creates a new trajectory of the field and changes the signal pattern .