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The equations of two straight lines are ...

The equations of two straight lines are
`(x-1)/2=(y+3)/1=(z-2)/(-3)` and `(x-2)/1=(y-1)/(-3)=(z+3)/2`
Statement 1: The given lines are coplanar.
Statement 2: The equations
`2r-s=1`
`r+3s=4`
`3r+2s=5`
are consistent.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1.

B

Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for Statement-1.

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to analyze the two given lines and determine if they are coplanar. We will also check the consistency of the given equations. ### Step 1: Write the equations of the lines in parametric form. The first line is given by: \[ \frac{x-1}{2} = \frac{y+3}{1} = \frac{z-2}{-3} \] Let \( r \) be the parameter for this line. Then, we can express the coordinates as: \[ x = 2r + 1, \quad y = r - 3, \quad z = -3r + 2 \] The second line is given by: \[ \frac{x-2}{1} = \frac{y-1}{-3} = \frac{z+3}{2} \] Let \( s \) be the parameter for this line. Then, we can express the coordinates as: \[ x = s + 2, \quad y = -3s + 1, \quad z = 2s - 3 \] ### Step 2: Set the parametric equations equal to find conditions for intersection. For the lines to intersect, the coordinates must be equal: 1. \( 2r + 1 = s + 2 \) 2. \( r - 3 = -3s + 1 \) 3. \( -3r + 2 = 2s - 3 \) ### Step 3: Rearranging the equations. From the first equation: \[ 2r - s = 1 \quad \text{(Equation 1)} \] From the second equation: \[ r + 3s = 4 \quad \text{(Equation 2)} \] From the third equation: \[ 3r + 2s = 5 \quad \text{(Equation 3)} \] ### Step 4: Check the consistency of the equations. We have the following system of equations: 1. \( 2r - s = 1 \) 2. \( r + 3s = 4 \) 3. \( 3r + 2s = 5 \) To check for consistency, we can solve the first two equations and substitute into the third. From Equation 1, we can express \( s \): \[ s = 2r - 1 \] Substituting \( s \) into Equation 2: \[ r + 3(2r - 1) = 4 \\ r + 6r - 3 = 4 \\ 7r - 3 = 4 \\ 7r = 7 \\ r = 1 \] Now substituting \( r = 1 \) back to find \( s \): \[ s = 2(1) - 1 = 1 \] ### Step 5: Verify with the third equation. Substituting \( r = 1 \) and \( s = 1 \) into Equation 3: \[ 3(1) + 2(1) = 5 \\ 3 + 2 = 5 \] This holds true. ### Conclusion: Since all three equations are consistent, we conclude that the lines are coplanar. ### Final Statements: - **Statement 1**: The given lines are coplanar. **True** - **Statement 2**: The equations are consistent. **True** Thus, both statements are true.

To solve the problem, we need to analyze the two given lines and determine if they are coplanar. We will also check the consistency of the given equations. ### Step 1: Write the equations of the lines in parametric form. The first line is given by: \[ \frac{x-1}{2} = \frac{y+3}{1} = \frac{z-2}{-3} \] ...
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OBJECTIVE RD SHARMA ENGLISH-PLANE AND STRAIGHT LINE IN SPACE -Section II - Assertion Reason Type
  1. Consider the planes 3x-6y-2z=15 and 2x+y-2z=5. Statement 1:The parame...

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  2. Consider three planes P(1):x-y+z=1, P(2):x+y-z=-1 and P(3):x-3y+3z=2...

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  3. Statement 1: Let A,B,C be the image of point P(a,b,c) in YZ,ZX andXY p...

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  4. Consider the plane pi:x+y-2z=3 and two points P(2,1,6) and Q(6,5,-2). ...

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  5. Statement 1: Lthe cartesian equation of the plane vecr=(hati-hatj)+lam...

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  6. Statement 1: If the vectors veca and vecc are non collinear, then the ...

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  7. Statement 1: If a is an integer the the straight lines vecr=hati+2ha...

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  8. Statement-I The lines (x-1)/(1)=(y)/(-1)=(z+1)/(1) and (x-2)/(1)=(y+1)...

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  9. Statement 1: A point on the line (x+2)/3=(y+1)/2=(z-3)/2 at a distance...

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  10. Consider the line L:vecr(hati+3hatj-hatk)+lamda(hatj+2hatk) and the pl...

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  11. Statement 1: The plane 5x+2z-8=0 contains the line 2x-y+z-3=0 and 3x+y...

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  12. Statement-I The point A(3, 1, 6) is the mirror image of the point B(1,...

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  13. Statement-I The point A(1, 0, 7) is the mirror image of the point B(1,...

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  14. The equations of two straight lines are (x-1)/2=(y+3)/1=(z-2)/(-3) a...

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  15. Given two straight lines whose equations are (x-3)/1=(y-5)/(-2)=(z-7...

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  16. Statement 1: The shortest distance between the lines x/2=y/(-1)=z/2 an...

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