Write the Complex Number in Rectangular Form $3 \left( \cos 9 ^ { \circ } + i \sin 9 ^ { \circ } \right)$

question 380

Multiple Choice

Write the complex number in rectangular form.
- $3 \left( \cos 9 ^ { \circ } + i \sin 9 ^ { \circ } \right)$

• A) \(1.7 + 0.3 \mathrm { i }\)
• B) \(3 + 0.5 i\)
• C) \(- 1.7 - 0.3 \mathrm { i }\)
• D) \(0.5 + 3 \mathrm { i }\)

Appreciate the limitations and capacities related to specific implementations like HashMap.

Develop the ability to use advanced Java Collection functionalities, such as SortedSet and wildcards for specifying a range of parameters.

Recognize the role of Collection classes in storing elements and understand that they are part of the java.util package.

Understand the use and implications of Java generics, specifically the use of wildcards.

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