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vecA=2hati+4hatj+4hatk and vecB=4hati+2h...

`vecA=2hati+4hatj+4hatk` and `vecB=4hati+2hatj-4hatk` are two vectors. The angle between them will be

A

`0^(@)`

B

`45^(@)`

C

`60^(@)`

D

`90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
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ERRORLESS -VECTORS-Exercise
  1. Given that vecA+vecB+vecC=0, out of three vectors two are equal in mag...

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  2. Two forces F(1)=1N and F(2)=2N act along the lines x=0 and y=0, respec...

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  3. At what angle must the two forces (x+y) and (x-y) act so that the resu...

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  4. Following forces start acting on a particle at rest at the origin of t...

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  5. The resultant of vec(A)+vec(B) is vec(R )(1). On reversing the vector ...

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  6. Figure below shows a body of mass M moving with the uniform speed on a...

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  7. A particle is moving on a circular path of radius r with uniform veloc...

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  8. vecA=2hati+4hatj+4hatk and vecB=4hati+2hatj-4hatk are two vectors. The...

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  9. If vecA=2hati+3hatj-hatk and vecB=-hati+3hatj+4hatk then projection of...

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  10. Two constant forces F(1)=2hati-3hatj+3hatk(N) and F(2)=hati+hatj-2hatk...

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  11. For the any two vecrtors vecA and vecB, if vecA.vecB=|vecAxxvecB|, the...

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  12. Which of the following is the unit vector perpendicular to vecA and ve...

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  13. Two vectors P=2hati+bhatj+2hatk and Q=hati+hatj+hatk will be parallel ...

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  14. Which of the following is not true? If vecA=3hati+4hatj and vecB=6hati...

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  15. The area of the triangle formed by 2hati+hatj-hatk and hati+hatj+hatk ...

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  16. Two trains along the same straight rails moving the constant speed 60k...

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  17. A steam boat goes across a lake and comes back : (a) on a quiet day wh...

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  18. To a person, going eastward in a car with a velociyt of 25km//hr, a tr...

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  19. A swimmer can swim in still water with speed v and the river is flowin...

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  20. A bus is moving with a velocity 10 ms^-1 on a straight road. A scooter...

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