Step 1:

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

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Find $\"\"$ .

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

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The vector is $\"\"$ .

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Substitute $\"\"$ in the magnitude formula.

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$\"\"$

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Maginutude of the vector is $\"\"$

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Find $\"\"$ .

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The vector is $\"\"$ .

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Substitute $\"\"$ in the magnitude formula.

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$\"\"$

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Maginutude of the vector is $\"\"$

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Find $\"\"$ .

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

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$\"\"$

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Maginutude of the vector is $\"\"$

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Find $\"\"$ .

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The vector is $\"\"$ .

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Substitute $\"\"$ in the magnitude formula.

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$\"\"$

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Maginutude of the vector is $\"\"$

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Solution:

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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(2)

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Step 1:

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Find $\"\"$ .

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

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

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$\"\"$

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Substitute $\"\"$ in the magnitude formula.

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$\"\"$

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Maginutude of the vector is $\"\"$

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Find $\"\"$ .

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

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$\"\"$

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Substitute $\"\"$ in the magnitude formula.

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$\"\"$

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Maginutude of the vector is $\"\"$

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Find $\"\"$ .

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From (1) Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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Maginutude of the vector is $\"\"$

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Solution:

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$\"\"$

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$\"\"$

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$\"\"$