Represent the Complex Number Graphically, and Find the Trigonometric Form $8 \left( \cos \frac { \pi } { 2 } + i \sin \frac { \pi } { 2 } \right)$

question 231

Multiple Choice

Represent the complex number graphically, and find the trigonometric form of the number.
-8i

• A) \(8 \left( \cos \frac { \pi } { 2 } + i \sin \frac { \pi } { 2 } \right)\)
• B) \(8 ( \cos \pi - i \sin \pi )\)
• C) \(8 \left( \cos \frac { 3 \pi } { 2 } - i \sin \frac { 3 \pi } { 2 } \right)\)
• D) \(8 ( \cos \pi + i \sin \pi )\)
• E) \(8 \left( \cos \frac { 3 \pi } { 2 } + i \sin \frac { 3 \pi } { 2 } \right)\)

Recognize the factors involved in the extinguishment of debt before maturity.

Understand the principles and controversies of the fair value option in financial reporting.

Analyze the impacts of interest rate changes on bond retirement and the related accounting implications.

Identify and distinguish among different types of derivative instruments and their accounting treatment.

---

Definitions:

Confidence Level

The percentage that expresses the degree of certainty in the reliability of a confidence interval.

Confidence Interval

A chain of values, emanating from statistical investigations of samples, which is believed likely to enclose the value of a mysterious population parameter.

Regression Line

A line of best fit through a scatter plot of data points that shows the relationship between two variables.

API Gravity Degrees

A measure of how heavy or light a petroleum liquid is compared to water.