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If vec a= i- j and vec b=- j+2k ,fin...

If ` vec a= i- j and vec b=- j+2k ,find (vec a-2 vec b)dot( vec a+ vec b)

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RD SHARMA ENGLISH-SCALAR OR DOT PRODUCT-All Questions
  1. For what value of lambda are the vector vec a\ a n d\ vec b perpendi...

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  2. If vec a\ a n d\ vec b are two vectors such that | vec a|=4,\ | vec ...

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  3. If vec a= i- j and vec b=- j+2k ,find (vec a-2 vec b)dot( vec a+ v...

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  4. Find the angle between the vectors vec a\ a n d\ vec b where: vec a...

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  5. Find the angle between the vectors vec a\ a n d\ vec b where: vec a...

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  6. Find the angle between the vectors vec a\ a n d\ vec b where: vec a...

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  7. Find the angle between the vectors vec a\ a n d\ vec b where: vec a...

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  8. Find the angle between the vectors vec a\ a n d\ vec b where: vec a...

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  9. Find the angle between the vectors vec a\ a n d\ vec b where: vec a...

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  10. Find the angles which the vector vec a= hat i- hat j+sqrt(2) hat k ma...

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  11. Dot product of a vector with hat i+ hat j-3 hat k ,\ hat i+3 hat j-2...

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  12. Dot products of a vector with vectors hat i- hat j+ hat k ,\ 2 hat i+...

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  13. If hat a\ a n d\ hat b are unit vectors inclined at an angle theta t...

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  14. If the sum of two unit vectors is a unit vector prove that the magni...

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  15. If vec a ,\ vec b ,\ vec c are three mutually perpendicular unit ve...

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  16. If | vec a+ vec b|=60 ,\ | vec a- vec b|=40\ | vec b|=46 , \ Then fin...

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  17. Show that the vector hat i+ hat j+ hat k is equally inclined with the...

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  18. Show that the vector vec a=1/7(2 hat i+3 hat j+6 hat k),\ vec b=1/7(...

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  19. For any tow vectors a\ a n d\ b show that ( vec a+ vec b) ( vec a- vec...

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  20. If vec a=2 hat i- hat j+ hat k ,\ vec b= hat i+ hat j-2 hat k\ a n d...

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