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

question 400

Multiple Choice

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

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

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Definitions:

CAPM

The Capital Asset Pricing Model, a formula used to determine the theoretical expected return of an investment given its risk relative to the market.

Risk-free Asset

An investment with zero risk of financial loss, typically considered to be government bonds.

Systematic Risk

Systematic risk refers to the risk inherent to the entire market or market segment, which cannot be mitigated through diversification.

CAPM

A financial theory that calculates the expected return on an investment based on its risk relative to the market as a whole.