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प्रश्न
If `veca.veca = 0` and `veca . vecb = 0,` then what can be concluded about the vector `vecb`?
योग
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उत्तर
`veca xx veca = 0, veca xx vecb = 0`
`veca xx veca = 0`
`|veca|^2 = 0`
`|veca| = 0, veca xx vecb = |veca| |vecb| cosθ = 0`
So `vecb` can be any vectors.
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