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Calculate the modulus and unit vector along the sum of vectors 2i-j-4k, 3i-2j+6k and 4i-2j-3k.

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Calculate the modulus and unit vector along the sum of vectors 2i-j-4k, 3i-2j+6k and 4i-2j-3k.

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A=2i-j-4k

B=3i-2j+6k

C=4i-2j-3k

R=A+B+C

R=9i-5j-k (sum of vectors)

Unit vectors= 9i-5j-k÷√9²+5²+1²

Unit vectors= 9i-5j-k÷√107

Magnitude=√107
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