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Prove that the following vectors are non...

Prove that the following vectors are non-coplanar: ` hat i+2 hat j+3 hat k ,\ 2 hat i+ hat j+3 hat k\ a n d\ hat i+ hat j+ hat k`

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We are given the vectors

`vec A=hat i+2 hat j+3 hat k `

`vec B= 2 hat i+ hat j+3 hat k`

`vec C=hat i+ hat j+ hat k`

Now to show non-coplanar of the vectors we must satisfy the condition
`[ vec(A) quad vec(B) quad vec(C)] != 0`

`rArr |[1,2,3],[2,1,3],[1,1,1]|`

`=1[(1)(1)-(1)(3)]-(2)[(2)(1)-(1)(3)]+(3)[(2)(1)-(1)(1)]`

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Prove that the four points having position vectors are non-coplanar; 3hat i+hat j-hat k,2hat i-hat j+7hat k and 7hat i-hat j+23hat k

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Show that the points whose position vectors are as given below are collinear: 2hat i+hat j-hat k,3hat i-2hat j+hat k and hat i+4hat j-3hat k3hat i-2hat j+4hat k,hat i+hat j+hat k and -hat i+4hat j-2hat k

Show that the following vectors are coplanar : -2hat(i)-2hat(j)+4hat(k), -2hat(i)+4hat(j)-2hat(k), 4hat(i)-2hat(k) and hat(i)-hat(j)+hat(k) .

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RD SHARMA-ALGEBRA OF VECTORS-Solved Examples And Exercises
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  2. Prove that the following vectors are non coplanar: 3 hat i+ hat j- hat...

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  3. Prove that the following vectors are non-coplanar: hat i+2 hat j+3 ha...

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  4. If vec a ,\ vec b ,\ vec c are non coplanar vectors, prove that the...

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  5. If vec a ,\ vec b ,\ vec c are non coplanar vectors, prove that the...

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  8. The direction cosines of a vector vecr, which is equally inclined to O...

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  9. Can a vector have direction angles 45^0,60^0,120^0

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  10. Prove that 1,1,1 cannot be direction cosines of a straight line.

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  11. A vector makes an angle of pi/4 with each of x-axis and y-axis F...

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  12. The vector vec r is inclined at equal acute angles of x-axis,y axis, ...

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  13. A vector vec r\ is inclined to x-axis at 45^0 and y-axis at 60^0dot ...

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  14. Find the direction cosines of the following vectors: 2 hat i+2 hat...

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  15. Find the direction cosines of the following vectors: 2 hat i+2 hat...

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  16. Find the direction cosines of the following vectors: 2 hat i+2 hat...

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  17. Find the angles at which the following vectors are inclined to each ...

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  18. Find the angles at which the following vectors are inclined to each ...

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  19. Find the angles at which the following vectors are inclined to each ...

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  20. Show that the vector i+j+k is equally inclined with the axes O X ,\ O ...

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