3a) Express 800 - 600i in trigonometric form, rounding to 2 decimal places if necessary. Remember that we should always use r>0 and 0°<θ< 360° to express our answers. b) Express, in trigonometric form, three values of Z for which z3 = 800 – 600i c) Express your solutions to part b) in standard a+bi form, rounding to three decimal places where needed. These are ugly, don't panic if you don't see "pretty coefficients.