Question

Find the magnitude and arguments of: a) Z1 7 - 12i b) Z2=-1 i

please give correct answer 100% please make sure hand writing is clear and easy to read. please help me explain clearly the answer given because i need to understand.

Answer 1

a) 2,=7-12) a=4, b=-12 J use o Magnitude = r 737 6125 = V 49 +144 = 13.892 Argument is aso, bo use o 0,= tant (2) = -59.743 b) Z2 = niti aco, bso suse © 2=-1, bas magnitude = VHS =V2 Gz =) use © On = tot tantan) = TE = 3 = 13% po tant toy it aso -0 arg catib t t tankbs it aco qp b>0 -0 A t than this it a co {b co_ @ to me if a=0 &b=0 E-, if a=0 and beo Le en determinale iG a=0&b=0. racsnitade= ratesa Note: