Question

(a) Determine the flux of an electric field of
E=(-24x-16y+39z)N/C through a plane surface represented by the normal vector .
A=(-1.6x+6.2y+4.1z)m^2
(b) What is the angle between A and E?

Answer 1

Flux is the dot product of the vectors, E*A

E*A = |E||A| cos @

having gotten E*A you can also get cos@, thus @.