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(8,1),(k,-4),(2,-5)...find the value of "k". Coordinate …

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(8,1),(k,-4),(2,-5)...find the value of "k". Coordinate geometry

Posted by Bharath.G Bharath.G 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Benudhar Mohanty 7 years, 3 months ago

First we have to put the value of area of triangle 1/2[ x1 ( y2 -y3) + x2( y3 - y1) +x3 (y1 - y2) ] So, now we have put the values =1/2[8(-4+5)+k(-5-1) +2(1+4)] =1/2(8-6k+10) =1/2(18-6k) =1/2*2(9-3k) => -3k = -9 => k =3 Hence the value of k is 3

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Posted by Kanika . 1 month ago

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Posted by Kishan Thakur 1 month ago

CBSE > Class 10 > Mathematics

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Posted by Hari Anand 6 months, 1 week ago

CBSE > Class 10 > Mathematics