Mathematics Part-II

Book: Mathematics Part-II

Chapter: 11. Three Dimensional Geometry

Subject: Maths - Class 12th

Q. No. 19 of Miscellaneous Exercise

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Find the vector equation of the line passing through (1, 2, 3) and parallel to the planes s and .

The vector equation of a line passing through a point with position vector and parallel to a vector is

Given, the line passes through (1,2,3)


Given, line is parallel to both planes

Line is perpendicular to normal of both planes.

i.e is perpendicular to normal of both planes.

we know that -

is perpendicular to both &

So, is cross product of normals of planes


Required Normal


Now, putting the value of & in formula

Therefore, the equation of the line is


Chapter Exercises

More Exercise Questions


If the lines and are perpendicular, find the value of k.