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यदि veca = 5hati - hatj - 3hatk ...

यदि ` veca = 5hati - hatj - 3hatk , vecb = hati + 3hatj - hatk ` तो दर्शाइए कि सदिश`(veca + vecbh ) ` और ` (veca - vecb )` लंबवत

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