Answer all questions: 1) the electric field of an electromagnetic wave propagating in air is given by e(z, t) = 4cos(6 x 10^8 t - 2z) +3 sin(6 x 10 t -2z) (v/m). find the associated magnetic field h(z, t)

Given: hf || jk; hg ? jg prove: fhg ? kjg to prove that the triangles are congruent by asa, which statement and reason could be used as part of the proof? fgh ? kgj because vertical angles are congruent. jkg ? hfg because vertical angles are congruent. fhg ? jkg because right angles are congruent. hfg ? kjg because alternate interior angles are congruent.

X+ y = 5 ; x - y =3 solve using linear combination

I'm confused on this could anyone me and show me what i need to do to solve it.