One given you can already use:

There's given the plane makes the angle with the plane , in general the angle between two planes is given by the formula:

Where and are the coordinates of the normal vectors of the two planes.

You know the coordinates of the normal vector of the plane so you can use this given.

About the line I have to think about, but the line is given in a parametric presentation so maybe I would try to reform it to a cartesian presentation by for example the substitution, let . But I'm not sure about this.