CBSE Class 12-science Answered
if l1,m1,n1 and l2,m2,n2 are the d.c.'s of two mutually perpendicular lines,show that the d.c.'s of the line perpendicular to both of these are m1n2-m2n1,nil2-n2l1,l1m2-l2m1
Asked by prabhakar p | 13 Mar, 2013, 09:18: AM
Expert Answer
It is a simple formula. You can expand it and show that LHS = RHS.
Or else, you can simply expand the denominator in the equation 4 and regroup the terms and you should reach what is written on the LHS here.
Answered by | 14 Mar, 2013, 07:33: AM
Concept Videos
-
Cartesian equation of a line
This video covers examples related to Equation of a line in space, Vector a... -
Skew Lines
This video explains how to calculate angle, shortest distance between two l... -
Equation of a Plane
This video explains the equation of a plane in normal form, perpendicular t... -
Intercept Form and Family of Planes
This video explains the equation of a plane through 3 non-collinear points,... -
Co-planarity of two lines
Co-planarity of two lines, angle between two planes & between a line and a ...
CBSE 12-science - Maths
Asked by shubh31122006 | 01 Feb, 2024, 09:06: AM
ANSWERED BY EXPERT
CBSE 12-science - Maths
Asked by kishanradha7392 | 05 Jul, 2022, 04:26: PM
ANSWERED BY EXPERTCBSE 12-science - Maths
Asked by suman.sh01 | 07 Jun, 2022, 07:22: PM
ANSWERED BY EXPERTCBSE 12-science - Maths
Asked by arjunsah797 | 02 May, 2022, 09:30: AM
ANSWERED BY EXPERTCBSE 12-science - Maths
Asked by Madhureddymamilla | 06 Jan, 2020, 01:11: PM
ANSWERED BY EXPERT
CBSE 12-science - Maths
Asked by rsjkumar2003 | 23 Sep, 2019, 01:09: PM
ANSWERED BY EXPERTCBSE 12-science - Maths
Asked by harshgarg18012003 | 26 Jun, 2019, 09:11: PM
ANSWERED BY EXPERTCBSE 12-science - Maths
Asked by tv2000in | 25 May, 2019, 06:25: PM
ANSWERED BY EXPERT
