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The angle between two vectors given by 6...

The angle between two vectors given by `6bari+6barj-3bark` and `7bari+4barj+4bark` is

A

`cos^(-1)(1/(sqrt(3)))`

B

`cos^(-1)(5/(sqrt(3)))`

C

`sin^(-1)(2/(sqrt(3)))`

D

`sin^(-1)((sqrt(5))/3)`

Text Solution

Verified by Experts

The correct Answer is:
D
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ERRORLESS -VECTORS-Exercise
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  2. Let vec(A)=hat(i)A cos theta+hat(j)A sin theta, be any vector. Another...

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  3. The angle between two vectors given by 6bari+6barj-3bark and 7bari+4ba...

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  4. A vector vecA points vertically upward and vecB points towards north. ...

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  5. the angle between the vectors (hati+hatj) and (hatj+hatk) is

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  6. The position vectors of points A,B,C and D are A=3hati+4hatj+5hatk,B=4...

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  7. If force (vecF)=4hati+4hatj and displacement (vecs)=3hati+6hatk then t...

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  8. if|vecAxxvecB|=|vecA.vecB|, then angle between vecA and vecB will be

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  9. In a clockwise system:

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  10. The linear velocity of a rotating body is given by vec(v)= vec(omega)x...

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  11. Three vectors veca,vecb and vecc satisfy the relation veca.vecb=0 and ...

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  12. The diagonals of a parallelogram are 2hati and 2hatj. What is the area...

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  13. What is the unit vector perpendicular to the following vectors 2hati+2...

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  14. The area of the parallelogram whose sides are represented by the vecto...

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  15. The position of a particle is given by vecr=(hati+2hatj-hatk) and mome...

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  16. Two vector A and B have equal magnitudes. Then the vector A+B is perpe...

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  17. Find the torque of a force vecF= -3hati+hatj+5hatk acting at the poin...

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  18. the value of (vecA+vecB)xx(vecA-vecB) is

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  19. If vecA and vecB are perpendicular vectors and vector vecA=5hati+7hatj...

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  20. A body, under the action of a force vec(F)=6hati -8hatj+10hatk , acqui...

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