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If `vec a =vec b +vec c,vec b xx vec d =vec 0 ,vec c *vec d = 0` then `(vec d xx (vec axx vec d))/(|vec d|^2)` is always equal to

A

`vec(a)`

B

`vec(b)`

C

`vec(c)`

D

`vec(d)`

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The correct Answer is:
C
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MOTION-VECTOR -EXERCISE - 2 ( LEVEL -I)
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  6. If vec a =vec b +vec c,vec b xx vec d =vec 0 ,vec c *vec d = 0 then ...

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  7. Consider a tetrahedron with faces f1, f2, f3, f4. Let vec a1, vec a2...

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  9. Points L, M and N lie on the sides AB, BC and CA of the triangle ABC s...

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  13. Let vec a , vec b ,a n d vec c be non-coplanar unit vectors, equal...

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  14. If the vectors a hat(i)+hat(j)+hat(k), hat(i)+bhat(j)+hat(k) and hat(i...

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