Find the Product A) $- 10 \sqrt { 3 } + 10 \mathrm { i }$

question 162

Multiple Choice

Find the product. Write the product in rectangular form, using exact values.
-[4 $\left. \left( \cos 30 ^ { \circ } + i \sin 30 ^ { \circ } \right) \right] \left[ 5 \left( \cos 120 ^ { \circ } + i \sin 120 ^ { \circ } \right) \right]$

• A) \(- 10 \sqrt { 3 } + 10 \mathrm { i }\)
• B) \(- 10 - 10 \sqrt { 3 } \mathrm { i }\)
• C) \(10 \sqrt { 3 } - 10 \mathrm { i }\)
• D) \(10 + 10 \sqrt { 3 } i\)

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Definitions:

Kindreds

A network of relatives within which individuals possess rights and obligations; often extending beyond immediate family.

Focal Person

An individual who is the center of attention or the main subject of study in a particular research or discussion.

Kindreds

Networks of relatives extended beyond the immediate family, including all individuals related by blood, marriage, or adoption.

EGO

In kinship terminology, the central person from whom the degree of each relationship is traced.