Let $z _ { 1 } = 4 \left( \cos \frac { \pi } { 6 } + i \sin \frac { \pi } { 6 } \right)$

question 114

Multiple Choice

Let $z _ { 1 } = 4 \left( \cos \frac { \pi } { 6 } + i \sin \frac { \pi } { 6 } \right)$ and $z _ { 2 } = 5 \left( \cos \frac { \pi } { 3 } + i \sin \frac { \pi } { 3 } \right)$ ) Find $Z _ { 1 } Z _ { 2 }$

• A) \(20 + i\)
• B) \(20 - 20 i\)
• C) \(20\)
• D) \(0 - 20 i\)
• E)none

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Definitions:

Informal Communication

Informal communication refers to the exchange of information unofficially and without a structured format within an organization.

Work Procedures

are established methods and processes designed to guide the actions of individuals within an organization in their job tasks, ensuring consistency, efficiency, and quality of work.

Formal Hierarchy

refers to the structured organization of roles and responsibilities within an institution, where positions and their relations are clearly defined.

Informal Communication

The exchange of information, ideas, and feelings in an unofficial, casual manner, often contributing to the social side of the workplace.