Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  JEEMAIN and AIPMT  >>  Mathematics  >>  Class11  >>  3-D Geometry
0 votes

The line $\overrightarrow r=(4\hat i+2\hat j+\alpha \hat k)+\lambda(\hat i+\hat j+2\hat k)$ lies on the plane $2x-4y+z=7$ if $\alpha=?$

Can you answer this question?

1 Answer

0 votes
If a line lies on a plane then every point of the line satisfies the equation of the plane.
A point on the given line is $ (4,2,\alpha)$
This point satisfies the eqn. of the plane $2x-4y+z=7$
$\therefore 8-8+\alpha=7$
answered Dec 28, 2013 by rvidyagovindarajan_1

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App