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Class 12 Three Dimensional Geometry · Assertion Reason1 Marksequations_of_lines

Class 12 Maths · Three Dimensional Geometry · Assertion Reason #26

Assertion (A): The line (x−1)/2=(y−2)/3=z/4 has parametric form x=1+2t,y=2+3t,z=4t. Reason (R): A line r=(a,b,c)+t(l,m,n) has x=a+lt,y=b+mt,z=c+nt.

✅ Step-by-Step Solution

Final Answer: Option (A): Both A and R are true, and R correctly explains A.
  1. Substitution of base (1,2,0) and direction (2,3,4) gives the assertion.

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