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The magnitude of the sum of two vectors ...

The magnitude of the sum of two vectors is equal to the difference in their magnitudes. What is the angle between vectors?

A

`0^(@)`

B

`45^(@)`

C

`90^(2)`

D

`180^(2)`

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AAKASH INSTITUTE-VECTOR ALGEBRA-ASSIGNMENT (SECTION-A)
  1. Find a unit vector in the direction of vector vecb = hati + 2hatj + 3h...

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  2. Prove that the vectgors 2hati-hatj+hatk, hati-3hatj-5hatk and 3hati-4h...

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  3. The magnitude of the sum of two vectors is equal to the difference in ...

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  4. What is the angle between veca and the resultant of veca+vecb and veca...

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  5. What is the magnitude of the scalar product of the following vectors ...

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  6. Given that 0.4hati+0.8hatj+b hatk is a unit vector . What is the valu...

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  7. ABCD is parallelogram. If L and M are the middle points of BC and CD, ...

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  8. If veca=hati+hatj, vecb=hatj+hatk, vec c hatk+hati, a unit vector par...

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  9. p1 hati+p2hatj is a unit vector perpendicular to 4hati-3hatj if

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  10. If vecOA=veca,vecOB=vecb,vecOC=2veca+3vecb,vecOD=veca-2vecb, the lengt...

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  11. Let veca=3hati-hatj, vecb=hati-2hatj, vec c=-hati+7hatj and vecp=veca+...

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  12. If vecaxxvecb=vecaxxvec c,veca ne 0, then

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  13. Given two vectors veca=2hati-3hatj+6hatk, vecb=-2hati+2hatj-hatk and...

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  14. The area of parallelogram whose diagonals coincide with the following ...

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  15. Let veca,vecb ,vecc be three nonzero vectors such that veca+vecb+vecc...

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  16. If vecaxxvecb=vecc,vecb xx vecc=veca, where vecc != vec0, then

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  17. ABCDEF is a regular hexagon where centre O is the origin, if the posit...

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  18. hati.(hatjxxhatk)+hatj.(hatixxhatk)+hatk.(hatixxhatj) is equal to

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  19. For any vector veca the value of (vecaxxhati)^2+(vecaxxhatj)^2+(vecaxx...

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  20. If |vecaxxvecb|=2,|veca.vecb|=2, then |veca|^(2)|vecb|^(2) is equal to

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