1.

Find the values of k if area of triangle is 4 sq. units and vertices are(k,0),(4,0),(0,2)

Answer»

SOLUTION :Given that`Delta=+-4`
`implies1/2|[K, 0,1],[4, 0,1],[0, 2,1]|=+-4`
`1/2[1/2|[k,1],[4,1]|]=+-4`
(on expanding ALONG `C_2`)
`implies -(k-4)= +-4`
`implies 4-k= +-4 `
`implies k=4overset-+4=4-4` or
4+4=0 or 8


Discussion

No Comment Found

Related InterviewSolutions