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Properties of Conjugate of a Complex Number

Express -5 ...

Question

Express $- 5$ in Euler form and find $(r, θ) .$

5, 0

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5, \frac{π}{2}

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5, π

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none of these

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Solution

The correct option is B $5, π$
In Euler form, $- 5 = 5 (cos π + i sin π) = r (cos θ + i sin θ)$
$∴ (r, θ) = (5, π)$
Ans: C

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