Let X=4\angle 40^{\circ}\ and\ Y=20\angle -30^{\circ}. Evaluate the following quantities

lenlifiauw2

lenlifiauw2

Answered question

2021-12-02

Let X=440 and Y=2030. Evaluate the following quantities and express your results in polar form: (X + Y)X

Answer & Explanation

Vincent Diaz

Vincent Diaz

Beginner2021-12-03Added 19 answers

As a rule of thumb, if we add or subtract complex numbers, we will do that in rectangular form while multiplication, division will be performed in polar form.
(X+Y)X=(440+2030)(440)
=(3.064+j2.571+17.32j10)(440)
=(20.3846j7.428)(440)
=(21.69620.023)(440)
=86.7860.023

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