Find z1z2. Write the answer in polar form with the argument between 0° and 360°.z1 = 10(cos 45° + i sin 45°), z2 = 5(cos 15° + i sin 15°)
A. 50(cos 60° + i sin 60°)
B. 50(cos 30° + i sin 30°)
C. 5(cos 60° + i sin 60°)
D. 5(cos 30° + i sin 30°)
Answer: A
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