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11 April, 12:51

The complex number - 5i has the complex trigonometric form of 5 (cos 270° + isin270º)

Determine if the statement given is true or false.

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  1. 11 April, 13:11
    0
    True

    Step-by-step explanation:

    Evaluating the proposed trigonometric form, we get ...

    5 (cos (270°) + i·sin (270°))

    = 5·cos (270°) + 5i·sin (270°)

    = 5·0 + 5i· (-2)

    = 5i

    The statement is true.
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