Express the current i t 2 cos 6t 120 2 sin 6t 60 mA in the general form i t A cos ot y mA where A 0 and 180 < y 180.

AFTER MIDTERM 2 3RD last week 3D plotting Create matrices for X and Y like this: ā [X,Y] = meshgrid(Ā10:.5:10); The variables are then available to use in equations: R = sqrt(X.^2+Y.^2); Z = sin(R)./R; The ānā in the syntax for contour are for how many lines...