Question

The adjacent sides of a parallelogram are
2i+4j-5k and i+2j+3k then the unit vector parallel to a diagonal is
​

Answer 1

Answer:

Step-by-step explanation:

diagonal vector of parallelogram is the resutant of the 2 adjacent sides of parallelogram.

thus diagonal vector OD=(2i+4j-5k)+(i+2j+3k)

OD=3i+6j-2k

now unit vector parallel to diagonal vector is OD/ |OD|

=(3i+6j-2k)/root of (3^2+6^2+(-2^2))

=(3i+6j-2k)/7

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