$\"\"$

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The vectors are $\"\"$ and $\"\"$ .

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Rewrite the vectors by simplification:

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

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Angle beteween two vectors is $\"\"$ .

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Magnitude of vector $\"\"$ :

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$\"\"$

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$\"\"$

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$\"\"$ .

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Magnitude ofvector $\"\"$ :

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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Dot product of $\"\"$ and $\"\"$ .

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$\"\"$

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Substitute corresponding values in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Therefore, $\"\"$ .

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Angle between two vectors is $\"\"$ .

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$\"\"$

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Angle between two vectors is $\"\"$ .