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10 August, 07:02

Given z1 and z2 below. Calculate z1/z2 and write your answer in rcistheta form.

z1=-3+3sqrt (3) i

z2=27i

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  1. 10 August, 08:31
    0
    (2/9) cis (30°)

    Step-by-step explanation:

    We can express the two numbers in magnitude∠angle form, then find their ratio.

    |z1| = 3√ ((-1) ² + (√3) ²) = 3√4 = 6

    ∠z1 = arctan ((3√3) / (-3)) = - arctan (√3) = 120°

    z2 = 27∠90°

    So, the ratio is ...

    z1/z2 = (6∠120°) / (27∠90°) = (6/27) ∠ (120°-90°)

    z1/z2 = (2/9) ∠30°
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