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Find the magnitude of the vectors vec a...

Find the magnitude of the vectors ` vec a=2 hat i+3 hat j-6 hat kdot`

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`|\vec{a}|=\sqrt{(2)^{2}+(3)^{2}+(-6)^{2}}=\sqrt{4+9+36}=\sqrt{49}=7`

`\|\vec{a}|=7`
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RD SHARMA-ALGEBRA OF VECTORS-Solved Examples And Exercises
  1. Find the unit vector in the direction of vec a+ vec b ,\ if\ vec a=2...

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  2. Fined the unit vector in the direction of vector vec P Q , where P...

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  3. Find the magnitude of the vectors vec a=2 hat i+3 hat j-6 hat kdot

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  4. Find the unit vector in the direction of 3 hat i+4 hat j-12 hat kdot

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  5. The adjacent sides of a parallelogram are represented by the vectors ...

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  6. If vec a=3 hat i- hat j-4 hat k ,\ vec b=-2 hat i+4 hat j-3 hat k\ a...

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  7. 6). If vec P Q=3 hat i+2 hat j- hat k and the coordinates of P are ...

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  8. Prove that the points hat i- hat j ,4 hat i-3 hat j+ hat k and 2 hat ...

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  9. If the vertices A ,\ B ,\ C of a triangle ABC are the point with posit...

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  10. Find the position vector from the origin O to the centroid of the tria...

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  11. Find the position vector of a point R which divides the line joinin...

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  12. Fined the unit vector in the direction of vector vec P Q , where P...

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  13. Show that the points A(2 hat i- hat j+ hat k), B( hat i-3 hat j-5 h...

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  14. Find the position vector of the mid point of the vector joining the ...

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  15. Find the value of x for which x\ ( hat i+ hat j+ hat k) is a unit vect...

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  16. If vec a= hat i+ hat j+ hat k , vec b=4 hat i-2 hat j+3 hat k and ve...

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  17. If vec a= hat i+ hat j+ hat k ,\ vec b=2 hat i- hat j+3 hat k\ a n d...

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  18. Two vectors hat j + hat k and 3 hat i - hat j + 4 hat k represents t...

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  19. Find a vector magnitude 5 units, and parallel to the resultant of t...

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  20. If a\ a n d\ b ar non collinear vector such that x1 vec a+y1 vec b=x2 ...

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