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vec A isa vector with direction cosines ...

` vec A` isa vector with direction cosines `cosalpha,cosbetaa n dcosgammadot` Assuming the `y-z` plane as a mirror, the directin cosines of the reflected image of ` vec A` in the plane are a. `cosalpha,cosbeta,cosgamma` b. `cosalpha,-cosbeta,cosgamma` c. `-cosalpha,cosbeta,cosgamma` d. `-cosalpha,-cosbeta,-cosgamma`

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CENGAGE PUBLICATION-VECTOR ALGEBRA-All Questions
  1. If vec A and vec B are two vectors and k any scalar quantity greater ...

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  2. The vectors x hat i+(x+1) hat j+(x+2) hat k ,(x+3) hat i+(x+4) hat j+(...

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  3. vec A isa vector with direction cosines cosalpha,cosbetaa n dcosgammad...

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  4. A vector oversetrarra has components 2p and 1 with respect to a rectan...

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  5. The sides of a parallelogram are 2 hat i+4 hat j-5 hat k and hat i+2 ...

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  6. If vec a , vec b , vec c are non-coplanar vector and lambda is a re...

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  7. If points hat i+ hat j , hat i- hat j and p hat i+q hat j+r hat k are...

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  8. If the vectors hat i- hat j , hat j+ hat k and vec a form a triangl...

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  9. If the resultant of three forces vec F1=p hat i+3 hat j- hat k , v...

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  10. If vec a, vec b, vec c are unit vectors satisfying the condition veca+...

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  11. The vector hat i+x hat j+3 hat k is rotated through an angle theta an...

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  12. Prove that point hat i +2 hat j - 3 hat k ,2 hat i - hat j + hat k ...

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  13. Show that the point A , B and C with position vectors vec a =3 hat i ...

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  14. If 2vec(AC)=3vec(CB), then prove that 2vec(OA)+3vec(OB)=5vec(OC) where...

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  15. Find the unit vector in the direction of vector vec (PQ), where P and...

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  16. For given vector, vec a = 2 hat i j +2 hat k and vec b = - hat i + ...

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  17. If the projections of vector vec a on x -, y - and z -axes are 2, ...

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  18. Find a vector in the direction of the vector 5 hat i - hat j + 2 h...

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  19. If vec a , vec b , vec c , vec d are the position vector of point A ,...

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  20. Show that the points A(6,-7,0),B(16 ,-19 ,-4),C(0,3,-6) and D(2,-5,10)...

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