Express the complex number in trigonometric form. -2i (1 point) 2(cos 180° + i sin 180°) 2(cos 90° + i sin 90°)

Question

Express the complex number in trigonometric form.
-2i (1 point)

2(cos 180° + i sin 180°)
2(cos 90° + i sin 90°)
2(cos 270° + i sin 270°)
2(cos 0° + i sin 0°)

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Thanh Thu 2 months 2021-08-01T03:08:05+00:00 1 Answers 6 views 0

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    2021-08-01T03:09:47+00:00

    C.) 2(cos 270° + i sin 270°)

    I hope this is correct and helps!

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )