MHT CET 2026 Mathematics question
Let is the equation of a plane and the line having direction ratios (5, b, 3) is parallel to the plane, then the value of b is...
Answer: (D)
Solution
The normal to the plane is . A line with direction ratios is parallel to the plane exactly when its direction vector is perpendicular to the normal: $(3)(5)+(-2)(b)+(7)(3)=0⇒
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