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bar(a) & bar(b) are two non- collinear v...

`bar(a)` & `bar(b)` are two non- collinear vectors then the value of `{(bar(a))/(|bar(a)|^(2))-(bar(b))/(|bar(b)|^(2))}^(2)` is equal to

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The correct Answer is:
`((bar(a) - bar(b))/(|bar(a)||bar(b)|))^(2)`
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