Let a→ = 2i^ - j^ + k^, b→ = i^ + 2j^ - k^ and c→ = i^ + j^ - 2k^ be three vectors. A vector in the plane of b→ and c→ whose projection on a→ is magnitude 23, is
| Vector Algebra
Let , and be three vectors. A vector in the plane of whose projection on is magnitude , is
A.
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188.
If the constant forces and -i^+2j^-k^act on a particle due to which it is displaced from a point A (4,- 3, - 2) to a point B (6, 1,- 3), then the work done by the forces is