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If Vector B⃗\vec { B } Is Added to Vector A→\overrightarrow { \mathrm { A } }

Question 55

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If vector B⃗\vec { B } is added to vector A→\overrightarrow { \mathrm { A } } ,the result is 6i~+j^6 \tilde { \mathbf { i } } + \hat { \mathbf { j } } .If B⃗\vec { B } is subtracted from A→\overrightarrow { \mathrm { A } } ,the result is −4i~+7j~- 4 \tilde { \mathbf { i } } + 7 \tilde { \mathbf { j } } .What is the magnitude of A→\overrightarrow { \mathrm { A } } ?


A) 5.1
B) 4.1
C) 5.4
D) 5.8
E) 8.2

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