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Let a,b,c represent respectively BC, CA ...

Let a,b,c represent respectively BC, CA and AB where ABC is a triangle. Then

A

a + b = c

B

b + c = a

C

`a xx b = b xx c = c xx a`

D

none

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The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-PRODUCTS OF VECTORS-Exercise 1B Cross Product of Vectors
  1. If a and b are unit vectors such that |a xx b| = a.b, then |a + b|^(2)...

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  2. If a + b + c = 0 then

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  3. Let a,b,c represent respectively BC, CA and AB where ABC is a triangle...

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  4. If a.b = a.c, a xx b = a xx c then

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  5. If a.b = a.c, a xx b = a xx c then

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  6. a != 0, b != 0, C != 0, a xx b = 0, b xx c implies a xx c =

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  7. If a xx b = b xx c != 0, then a + c =

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  8. If a xx b = c xx d, a xx c = b xx d then

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  9. If a,b,c be unit vectors such that a.b = a.c = 0 and the angle between...

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  10. Let u = I + j, v = I - j, w = I + 2j + 3k. If n a unit vector such tha...

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  11. If u and v are unit vectors and theta is the acute angle between them,...

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  12. If r. a = r.b = r.c = 0 where a,b,c are noncoplannar, then

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  13. If a is any vector then (a xx i)^(2) + (a xx j)^(2) + (a xx k)^(2) =

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  14. If a xx I + 2a - 5j = 0 then a =

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  15. If vec(a) is a unit vector and vec(a) xx vec(i) = vec(j), then vec(a)....

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  16. If three vectors a,b,c are such that a !=0 and a xx b = 2 (a xx c), |a...

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  17. The vector area of the parallelogram whose adjacent sides are i + j + ...

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  18. The area of the parallelogram whose adjacent sides are 3i + 2j + k and...

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  19. The vector area of the parallelogram whose diagonals are I + j - k, 2i...

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  20. The area of the parallelogram whose diagonals are I - 3j + 2k, -I + 2j...

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