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Iqbal Johal
Asked: 2022-11-09T19:45:13+05:30 In:

If `(veca xxv vecb) xx (vecc xx vecd) . (veca xx vecd) =0` then which of the following may be true ?
A. `veca, vecb and vecd` are nenessarily coplanar
B. `veca` lies iin the plane of `vecc and vecd`
C. `vecvb` lies in the plane of `veca and vecd`
D. `vecc` lies in the plane of `veca and vecd`

If `(veca xxv vecb) xx (vecc xx vecd) . (veca xx vecd) =0` then which of the following may be true ?
A. `veca, vecb and vecd` are nenessarily coplanar
B. `veca` lies iin the plane of `vecc and vecd`
C. `vecvb` lies in the plane of `veca and vecd`
D. `vecc` lies in the plane of `veca and vecd`
Parabola
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  1. Correct Answer – b,c,d
    `(vecaxxvecb )xx(vecc xx vecd). (vecaxxvecd) =0`
    `or ([veca vecc vecd] vecb- [vecb vecc vecd]veca) . (veca xx vecd)=0`
    `or [veca veccvecd] [vecb veca vecd] =0`
    Hence, either `vecc or vecb` must lie in the plane of ` veca and vecd`.

    • 0
Afreen Eddie Jacob
Asked: 2022-11-02T19:38:44+05:30 In:

If `(veca xxv vecb) xx (vecc xx vecd) . (veca xx vecd) =0` then which of the following may be true ?
A. `veca, vecb and vecd` are nenessarily coplanar
B. `veca` lies iin the plane of `vecc and vecd`
C. `vecvb` lies in the plane of `veca and vecd`
D. `vecc` lies in the plane of `veca and vecd`

If `(veca xxv vecb) xx (vecc xx vecd) . (veca xx vecd) =0` then which of the following may be true ?
A. `veca, vecb and vecd` are nenessarily coplanar
B. `veca` lies iin the plane of `vecc and vecd`
C. `vecvb` lies in the plane of `veca and vecd`
D. `vecc` lies in the plane of `veca and vecd`
Parabola
Leave an answer

Leave an answer

Browse

1 Answer

  1. Correct Answer – b,c,d
    `(vecaxxvecb )xx(vecc xx vecd). (vecaxxvecd) =0`
    `or ([veca vecc vecd] vecb- [vecb vecc vecd]veca) . (veca xx vecd)=0`
    `or [veca veccvecd] [vecb veca vecd] =0`
    Hence, either `vecc or vecb` must lie in the plane of ` veca and vecd`.

    • 0