What about it?
Z is a complex number, in quad IV of the Argand plane.
Z = 3 - 4i
= 5(cosθ + isinθ) , where tanθ = -4/3
in radians: θ = 5.3559
so Z = 5(cos5.3559 + isin5.3559)
in degrees: θ = 306.8699°
Z = 5(cos306.8699° + isin306.8699°)
Z=3-4i then
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