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If a and b are unit vectors such that |a...

If a and b are unit vectors such that `|a xx b| = a.b`, then `|a + b|^(2)` =

A

2

B

`2 + sqrt(2)`

C

`2 - sqrt(2)`

D

`sqrt(2)`

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-PRODUCTS OF VECTORS-Exercise 1B Cross Product of Vectors
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  2. If a and b are unit vectors and a xx b = 1, then the angle between a a...

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  3. If a and b are unit vectors such that |a xx b| = a.b, then |a + b|^(2)...

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  4. If a + b + c = 0 then

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

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

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

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

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

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

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

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

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

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

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

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