Question

what is compondes of vecter A=iAx+jAy+kAz along the direction of i-j

?

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Answer 1

v1 = 3i + 4j + k

v2 = i - j - k

v1 + v2 = 3i + 4j + k + i - j - k

= 4i + 3j

|v1 + v2| = √(4² + 3²)

= √25

= 5

I think this will help you