All numerical angles(phases) should be given in radian angles (not degrees). Given the differential equatic y" +9y + 18y = 6cos(6t + 0.785398)u(t). a. Find the functional form of the complementary...

Extracted text: All numerical angles(phases) should be given in radian angles (not degrees). Given the differential equatic y" +9y + 18y = 6cos(6t + 0.785398)u(t). a. Find the functional form of the complementary solution, ye(t). Ye(t) = (C1e^(-31)+C2e^(-6t))u(t) help (formulas) %3D b. Find the particular solution, Yp(t). Yp(t) = .105cos(6t-1.107148881)u(t) help (formulas) %3D c. Find the total solution, y(t) for the initial condition y(0) = 7 and y' (0) = 10. %3D y(t) = | help (formulas) Note the answers are checked to an absolute accuracy of 0.01. part a and b are correct solve for part c.