$\"\"$

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

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Rewrite the vectors as $\"\"$ and $\"\"$ .

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

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

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defined as $\"\"$ .

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$\"\"$

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Since the dot product is not equals to zero, the vectors $\"\"$ and $\"\"$ are

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not orthogonal.

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$\"\"$

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

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If the vectors $\"\"$ and $\"\"$ are parallel, then angle between the vectors is zero.

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$\"\"$

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The magnitude of vector $\"\"$ :

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$\"\"$

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The magnitude of vector $\"\"$ :

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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Since $\"\"$ , the vectors $\"\"$ and $\"\"$ are not parallel to each other.

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$\"\"$

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The vectors $\"\"$ and $\"\"$ are neither orthogonal nor parallel.