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sagar venu gopal Grade:

A straight line passes through the point (2, –1, –1). It is parallel to the plane
4x + y + z + 2 = 0 and is perpendicular to the line

       x/1=y/(-2) =(z-5)/1                     Find the equations of the straight line ?

7 years ago

Answers : (1)

Amit Saxena
35 Points

Dear Sagar,

Let direction cosines of straight line be l, m, n

                              then :    4l + m + n = 0

                                          and for that of the given equation is

                                       :    l – 2m + n = 0

 thus ,

             l/3 = m/-3= n/-9  →  l/-1=m/-3=n/3. provides online iit jee courses and IIT JEE Test Series with IITians. Click here to get free online test series and check your status timely or you can join us as our registered user for getting best iit jee study material or iit jee test series.

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thanks and regards.

Akhilesh Shukla

7 years ago
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