Write the Expression in the Standard Form a + Bi $\left[ 2 \left( \cos 15 ^ { \circ } + i \sin 15 ^ { \circ } \right) \right] ^ { 3 }$

question 190

Multiple Choice

Write the expression in the standard form a + bi.
- $\left[ 2 \left( \cos 15 ^ { \circ } + i \sin 15 ^ { \circ } \right) \right] ^ { 3 }$

• A) \(3 + 3 \mathrm { i }\)
• B) \(4 \sqrt { 2 } + 4 \sqrt { 2 } \mathrm { i }\)
• C) \(3 \sqrt { 2 } + 3 \sqrt { 2 } \mathrm { i }\)
• D) \(4 + 4 \mathrm { i }\)

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