Find the product of the complex numbers. Leave answer in polar form.z1 = 5(cos 20° + i sin 20°)z2 = 4(cos 10° + i sin 10°)
A. 9(-cos 200° - i sin 200°)
B. 20(cos 200° + i sin 200°)
C. 9(cos 30° + i sin 30°)
D. 20(cos 30° + i sin 30°)
Answer: D
Mathematics
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?
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