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

question 123

Multiple Choice

Write the complex number in trigonometric form r(c $$r ( \cos \theta + i \sin \theta )$$ ) , with $$\theta$$ in the interval [0 $$\left[ 0 ^ { \circ } , 360 ^ { \circ } \right)$$
- $15 + 20 \mathrm { i }$

• A) \(25 \left( \cos 126.9 ^ { \circ } + i \sin 126.9 ^ { \circ } \right)\)
• B) \(25 \left( \cos 53.1 ^ { \circ } + i \sin 53.1 ^ { \circ } \right)\)
• C) \(25 \left( \cos 233.1 ^ { \circ } + \mathrm { i } \sin 233.1 ^ { \circ } \right)\)
• D) \(25 \left( \cos 306.9 ^ { \circ } + i \sin 306.9 ^ { \circ } \right)\)

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