If vector $\vec { B }$ is added to vector $\overrightarrow { \mathrm { A } }$ ,the result is $6 \tilde { \mathbf { i } } + \hat { \mathbf { j } }$ .If $\vec { B }$ is subtracted from $\overrightarrow { \mathrm { A } }$ ,the result is $$- 4 \tilde { \mathbf { i } } + 7 \tilde { \mathbf { j } }$$ .What is the magnitude of $\overrightarrow { \mathrm { A } }$ ?
A)5.1
B)4.1
C)5.4
D)5.8
E)8.2

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The Answer of If vector $\vec { B }$ is added to vector $\overrightarrow { \mathrm { A } }$ ,the result is $6 \tilde { \mathbf { i } } + \hat { \mathbf { j } }$ .If $\vec { B }$ is subtracted from $\overrightarrow { \mathrm { A } }$ ,the result is $$- 4 \tilde { \mathbf { i } } + 7 \tilde { \mathbf { j } }$$ .What is the magnitude of $\overrightarrow { \mathrm { A } }$ ?
A)5.1
B)4.1
C)5.4
D)5.8
E)8.2

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

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