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Prove that the lines (x+1)/3=(y+3)/5=(z+...

Prove that the lines `(x+1)/3=(y+3)/5=(z+5)/7a n d(x-2)/1=(y-4)/4=(z-6)/7` are coplanar . Aslo, find the plane containing these two lines.

A

`(0,0,0)`

B

`(1,0,1)`

C

`(1,-1,1)`

D

`(-1,1,0)`

Text Solution

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The correct Answer is:
A
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MCGROW HILL PUBLICATION-THE DIMENSIONAL GEOMETRY -EXERCISE (LEVEL 1 (SINGLE CORRECT ANSWER TYPE QUESTIONS))
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  2. If theta denotes the acute angle between the line r=(i+2j-k)+lambda(i-...

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  3. Prove that the lines (x+1)/3=(y+3)/5=(z+5)/7a n d(x-2)/1=(y-4)/4=(z-6)...

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  4. Equation of a plane bisecting an angle between the plane r.(i+2j+2k)=1...

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  5. If the line (x-1)/(2)=(y-3)/(a)=(z+1)/(3) lies in the plane bx+2y+3z-4...

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  6. Equation of the plane passing through the points i+j-2k,2i-j+kandi+2j+...

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  7. The line of shortest distance between the lines (x-1)/(2)=(y+8)/(-7)...

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  8. If r.n=q is the equation of a plane normal to the vector n, the length...

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  9. If the foot of the perpendicular from the origin to plane is P(a ,b...

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  10. The plane passing through the point (-2,-2, 2) and containing the line...

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  11. Equation of a line passing through the point whose position vector is ...

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  12. The lines r=i-j+lambda(2i+k) and r=2i-j+mu(i+j-k)

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  13. The points (-2,5), (3, -4) and (7, 10) are the vertices of the triangl...

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  14. The foot of the perpendicular from (a, b, c) on the line x=y=z is the ...

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  15. Equation of a plane which passes through the line x+py+q=0=rz+s and ma...

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  16. Parametric form of the equation of the line 3x-6y-2z-15=2x+y-2z-5=0 is

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  17. A line with cosines proportional to 2,7-5 drawn to intersect the lines...

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  18. The YZ-plane divides the line joining the points (3,5,-7)and(-2,1,8) i...

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  19. Find the angle between the lines (x-2)/3=(y+1)/(-2)=z=2a n d(x-1)/1=(2...

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  20. If the plane (x)/(a)+(y)/(b)+(y)/(c )=3 meets the coordinate axes in A...

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