$\"\"$

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Initial point is $\"\"$ and terminal point is $\"\"$ .

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The component form of $\"\"$ and $\"\"$ is $\"\"$ .

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Let the points are $\"\"$ and $\"\"$ .

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The component form $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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Magnitude of $\"\"$ is $\"\"$ .

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$\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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Using the magnitude and component form, find a unit vector $\"\"$ in the direction of $\"\"$ .

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The unit vector, $\"\"$ .

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

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$ ; $\"\"$ ; $\"\"$ .