Write the Complex Number in Trigonometric Form R(c $$r ( \cos \theta + i \sin \theta )$$

question 73

Multiple Choice

Write the complex number in trigonometric form r(c $$r ( \cos \theta + i \sin \theta )$$ ) , with $$\theta$$ in the interval [0 $$\left[ 0 ^ { \circ } , 360 ^ { \circ } \right)$$
- $- 2 \mathrm { i }$

• A) \(2 \left( \cos 180 ^ { \circ } + i \sin 180 ^ { \circ } \right)\)
• B) \(2 \left( \cos 0 ^ { \circ } + i \sin 0 ^ { \circ } \right)\)
• C) \(2 \left( \cos 270 ^ { \circ } + i \sin 270 ^ { \circ } \right)\)
• D) \(2 \left( \cos 90 ^ { \circ } + i \sin 90 ^ { \circ } \right)\)

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Definitions:

Conversion Formula

A mathematical equation used to change a measurement from one unit to another.

Yards

A unit of length equal to 3 feet or 36 inches, used in both the imperial and US customary systems.