Write the Complex Number in Rectangular Form $9 \left( \cos 180 ^ { \circ } + i \sin 180 ^ { \circ } \right)$

question 40

Multiple Choice

Write the complex number in rectangular form.
- $9 \left( \cos 180 ^ { \circ } + i \sin 180 ^ { \circ } \right)$

• A) \(- 9\)
• B) \(9 \mathrm { i }\)
• C) 9
• D) \(- 9 \mathrm { i }\)

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Definitions:

Canada

A country located in the northern part of North America, known for its vast landscapes, multicultural population, and bilingual French and English culture.

Mean

The average of a set of numbers, calculated by summing all the numbers and then dividing by the count of the numbers.

Mean

The average of a set of numbers, calculated by dividing the sum of all values by the count of values.

Skewed

Describes a situation where a distribution of data is not symmetrical and may lean towards one side, either to the left or right, indicating potential outliers or a deviation from the normal distribution.