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त्रिभुज ABC ( आकृति ) , के लिए निम्निलिखित में से कौन-सा कथन सत्य नहीं है ? `(a) vec(AB) + vec(BC) + vec(CA) = vec0` ` (b) vec(AB) + vec(BC) - vec(AC)

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त्रिभुज ABC ( आकृति ) , के लिए निम्निलिखित में से कौन-सा कथन सत्य नहीं है ?
image
`(a) vec(AB) + vec(BC) + vec(CA) = vec0`
` (b) vec(AB) + vec(BC) - vec(AC) =vec0`
` (c ) vec(AB) + vec(BC) - vec(CA) = vec0`
`(d) vec(AB) - vec( CB ) + vec(CA ) = vec0`
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सदिश योग के त्रिभुज नियम से
` vec(AB) + vec(BC)= vec(AV)` या ` vec(AB) + vec(BC ) =- vec(CA)`
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