$\"\"$

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The vector is $\"\"$ .

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Find the vector $\"\"$ when $\"\"$ .

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Scalar projection of $\"\"$ onto $\"\"$ is $\"\"$ .

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Consider the other vector is $\"\"$ .

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The dot product of the vectors $\"\"$ and $\"\"$ .

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If $\"\"$ and $\"\"$ are two vectors, then the dot product of $\"\"$ and $\"\"$ is

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$\"\"$ .

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$\"\"$

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$\"\"$ .

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Magnitude of the vector $\"\"$ is $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$ .

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Scalar projection of $\"\"$ onto $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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Solve any values for $\"\"$ and $\"\"$ that satisfies the equation.

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Substitute $\"\"$

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$\"\"$

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$\"\"$ .

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Therefore, the possible vector is $\"\"$ or any vector of the form $\"\"$ .

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$\"\"$

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The possible vector is $\"\"$ or any vector of the form $\"\"$ .