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Pranab Javed Gupta
Asked: 2022-11-05T14:58:23+05:30 In:

If `veca .vecb =beta and veca xx vecb = vecc ,” then ” vecb` is
A. `((betaveca-vecaxxvecc))/(|veca|^(2))`
B. `((betaveca+vecaxxvecc))/(|veca|^(2))`
C. `((betavecc + vecaxxvecc))/(|veca|^(2))`
D. `((betavecc + vecaxxvecc))/(|veca|^(2))`

If `veca .vecb =beta and veca xx vecb = vecc ,” then ” vecb` is
A. `((betaveca-vecaxxvecc))/(|veca|^(2))`
B. `((betaveca+vecaxxvecc))/(|veca|^(2))`
C. `((betavecc + vecaxxvecc))/(|veca|^(2))`
D. `((betavecc + vecaxxvecc))/(|veca|^(2))`
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1 Answer

  1. Correct Answer – a
    ` veca xx vecb =vecc`
    `or veca xx (veca xx vecb) =veca xx vecc `
    `or (vec.vecb) veca – |veca|^(2) vecb = veca xx vecc`
    `or vecvb = (betaveca -veca xx vecc)/(|veca|^(2) ” ” (veca .vecb = beta)`

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