Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form. [3(cos 80 + i sin 80)]

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Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form. [3(cos 80 + i sin 80)] [3(cos 80 + i sin 80) = (Simplify your answer, including any radicals. Type your answer in the form a + bi. Use integers or fractions for any numbers in the expression. Rationalize the denominator.)