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Find the Product or Quotient, as Indicated z1\mathrm { z } _ { 1 }

Question 203

Multiple Choice

Find the product or quotient, as indicated. Leave your answer in polar form.
-Find the product of z1\mathrm { z } _ { 1 } and z2\mathrm { z } _ { 2 } .
z1=3[cos(40) +isin(40) ],z2=44(cos180+isin180) \mathrm { z } _ { 1 } = 3 \left[ \cos \left( - 40 ^ { \circ } \right) + \mathrm { i } \sin \left( - 40 ^ { \circ } \right) \right] , \mathrm { z } _ { 2 } = 44 \left( \cos 180 ^ { \circ } + \mathrm { i } \sin 180 ^ { \circ } \right)


A) 132(cos220+isin220) 132 \left( \cos 220 ^ { \circ } + i \sin 220 ^ { \circ } \right)
B) 132(cos140+isin140) 132 \left( \cos 140 ^ { \circ } + i \sin 140 ^ { \circ } \right)
C) 132(cos7200+isin7200) 132 \left( \cos - 7200 ^ { \circ } + i \sin - 7200 ^ { \circ } \right)
D) 47(cos140+isin140) 47 \left( \cos 140 ^ { \circ } + \mathrm { i } \sin 140 ^ { \circ } \right)

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