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Show that the points A(-2 hat i+3 hat j+...

Show that the points `A(-2 hat i+3 hat j+5 hat k), B( hat i+2 hat j+3 hat k)`and `C(7 hat i-3 hat k)`are collinear.

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To show that the points \( A(-2 \hat{i} + 3 \hat{j} + 5 \hat{k}), B(\hat{i} + 2 \hat{j} + 3 \hat{k}), C(7 \hat{i} - 3 \hat{k}) \) are collinear, we can use the determinant method. The points are collinear if the volume of the parallelepiped formed by the vectors \( \overrightarrow{AB} \), \( \overrightarrow{AC} \), and \( \overrightarrow{BC} \) is zero, which can be determined using the determinant of a matrix formed by these vectors. ### Step 1: Find the position vectors of points A, B, and C. - Position vector of \( A \): \( \vec{A} = -2 \hat{i} + 3 \hat{j} + 5 \hat{k} \) - Position vector of \( B \): \( \vec{B} = \hat{i} + 2 \hat{j} + 3 \hat{k} \) - Position vector of \( C \): \( \vec{C} = 7 \hat{i} + 0 \hat{j} - 3 \hat{k} \) ### Step 2: Find the vectors \( \overrightarrow{AB} \) and \( \overrightarrow{AC} \). ...
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Prove that point hat i+2hat j-3hat k,2hat i-hat j+hat k and 2hat i+5hat j-hat k from a triangle in space.

The vector equation of the plane containing the line vec r=(-2 hat i-3 hat j+4 hat k)+lambda(3 hat i-2 hat j- hat k) and the point hat i+2 hat j+3 hat k is a. vec rdot(( hat i+3 hat k)=10 b. vec rdot(( hat i-3 hat k)=10 c. vec rdot((3 hat i+ hat k)=10 d. none of these

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NCERT-VECTOR ALGEBRA-SOLVED EXAMPLES
  1. Let vec a= hat i+2 hat jand vecb=2 hat i+ hat j. Is | vec a|=| vec b...

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  2. Find unit vector in the direction of vector vec a=2 hat i+3 hat j+ ha...

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  3. Find a vector in the direction of vector vec a= hat i-2 hat jthat has...

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  4. If with reference to the right handed system of mutually perpendicula...

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  5. Find | vec a xx vec b|,if vec a=2 hat i+ hat j+3 hat k and vec b=3 h...

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  6. Find a unit vector perpendicular to each of the vectors ( veca+ vecb)...

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  7. For any two vectors vec a and vec b, we always have |vec a+ vec b|<=|v...

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

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  9. Write all the unit vectors in X Y-p l a n edot

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  10. If hat i+ hat j+ hat k ,2 hat i+5 hat j ,3 hat i+2 hat j-3 hat kand ...

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  11. Find the area of a triangle having the pointsA(1, 1, 1), B(1, 2, 3)and...

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  12. Find the area of a parallelogram whose adjacent sides are given by th...

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  13. Let vec a , vec b and vec cbe three vectors such that | vec a|=3,|...

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  14. Three vectors vec( a), vec(b) and vec(c) satisfy the co...

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  15. Find lambda if the vectors veca= hat i+3\ hat j+ hat k , vecb=2 hat...

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  16. Prove that [ -> a , -> b , -> c+ -> d]=[ -> a , -> b , -> c]+[ -> a , ...

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  17. Show that the vectors -> a= hat i-2\ hat j+3 hat k , -> b=\ 2 hat i...

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  18. Find vec a . ( vec b xx vec c), if vec a=2 hat i+ hat j+3 hat k , ve...

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  19. Prove that [ veca+ vecb , vecb+ vecc , vecc+ veca]=2[ veca , vecb , ve...

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  20. Show that the four points A, B, C and D with position vectors4 hat i+...

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