Ashley B.

asked • 05/18/22

Write the complex number in trigonometric form r(cosθ+isinθ)​, with θ in the interval 0°,360°.

- 10 = ? (cos? + i sin?)

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Robert K. answered • 05/18/22

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This is a negative number with no imaginary part so the angle is180 deg.


-10(cos 180 deg + i sin 180 deg) or -10 cis 180 deg

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Mark M.

The 10 is positive. The number is made negative by the cos 180 degrees.
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05/18/22

Robert K.

Yes! Should be 10(cos 180 deg + i sin 180 deg) or 10 cis 180 deg
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05/19/22

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