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Find the Product A) 142142i- 14 \sqrt { 2 } - 14 \sqrt { 2 } \mathrm { i }

Question 435

Multiple Choice

Find the product. Write the product in rectangular form, using exact values.
-[7( cos45+isin45) ][2(cos90+isin90) ]\left. \left. \cos 45 ^ { \circ } + \mathrm { i } \sin 45 ^ { \circ } \right) \right] \left[ 2 \left( \cos 90 ^ { \circ } + \mathrm { i } \sin 90 ^ { \circ } \right) \right]


A) 142142i- 14 \sqrt { 2 } - 14 \sqrt { 2 } \mathrm { i }
B) 72282i7 \sqrt { 2 } - 28 \sqrt { 2 } \mathrm { i }
C) 262i2 \sqrt { 6 } - \sqrt { 2 } i
D) 72+72i- 7 \sqrt { 2 } + 7 \sqrt { 2 } i

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