Request a call back

Join NOW to get access to exclusive study material for best results

ICSE Class 9 Answered

Use the distance formula to shoelw that the points A(1,-1) B(6,4)C(4,2) are collinear
Asked by lovemaan5500 | 26 Feb, 2018, 05:28: PM
answered-by-expert Expert Answer
begin mathsize 16px style AB equals square root of left parenthesis 6 minus 1 right parenthesis squared plus left parenthesis 4 plus 1 right parenthesis squared end root equals square root of 25 plus 25 end root equals square root of 50 equals 5 square root of 2
BC equals square root of left parenthesis 4 minus 6 right parenthesis squared plus left parenthesis 2 minus 4 right parenthesis squared end root equals square root of 4 plus 4 end root equals square root of 8 equals 2 square root of 2
AC equals square root of left parenthesis 4 minus 1 right parenthesis squared plus left parenthesis 2 plus 1 right parenthesis squared end root equals square root of 9 plus 9 end root equals square root of 18 equals 3 square root of 2
Now comma
AB equals AC plus BC
Hence comma space straight A comma space straight B comma space straight C space are space collinear space points.
end style
Answered by Rashmi Khot | 26 Feb, 2018, 05:57: PM
ICSE 9 - Maths
Asked by lovemaan5500 | 26 Feb, 2018, 05:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×