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a. 3 + j5 --> a = 3, b = 5
tan θ = b / a
= 5 / 3
θ = arc tan (5/3)
= 59°
r = √a²+b²
= √3²+5²
= √34
(√34, 59°)
b. 3 - 6j --> a=3, b = -6
tan θ = -6/3 --> b-,a+ pada kw IV
= -2
θ = arc tan (-2)
= 360 -63,4
= 296,6°
r =√3²+(-6)²
= √9+36
= √45
= 3√5
( 3√5, 296,6°)
c. -4 - j5 --> a = -4, b = -5
tan θ = -5/-4 --. a -,b - (kw III)
= 5/4
θ = arc tan (5/4)
= 180+51,3
= 231,3
r = √(-4)²+(-5)²
= √16+25
= √41
(√41, 231,3°)