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Trignometry

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Contest [swordfish #1]: Find the eqn. of the medians of a triangle
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 ABC is a and the equation of the sides AB, BC, CA are
a1 x + b1 y + c1 = 0 .... (1)
a2 x + b2 y + c2 = 0 .... (2)
a3 x + b3 y + c3 = 0 .... (3)

Find the eqn. of the medians of the triangle, without solving for the vertices.


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New kid on the Block

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2 Dec 2008 21:04:37 IST
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Re:Contest [swordfish #1]: Find the eqn. of the medians of a triangle
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28 Mar 2009 10:35:05 IST
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Contest [swordfish #1]: Find the eqn. of the medians of a triangle
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28 Mar 2009 13:31:17 IST
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The equation of median through A is a1x+b1y+c1+k(a3x+b3y+c3)

this line passes through mid point of BC. The vertices B is (b1c2 - b2c1/a1b2 - a2b1 , a2c1 - c2a1/a1b2 - a2b1) and similarly find other vertices. Solve for   k   and substituting in 1st equation.

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28 Mar 2009 13:31:38 IST
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The equation of median through A is a1x+b1y+c1+k(a3x+b3y+c3)

this line passes through mid point of BC. The vertices B is (b1c2 - b2c1/a1b2 - a2b1 , a2c1 - c2a1/a1b2 - a2b1) and similarly find other vertices. Solve for   k   and substituting in 1st equation.

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28 Mar 2009 13:32:17 IST
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The equation of median through A is a1x+b1y+c1+k(a3x+b3y+c3)

this line passes through mid point of BC. The vertices B is (b1c2 - b2c1/a1b2 - a2b1 , a2c1 - c2a1/a1b2 - a2b1) and similarly find other vertices. Solve for   k   and substituting in 1st equation.

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28 Mar 2009 13:32:59 IST
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The equation of median through A is a1x+b1y+c1+k(a3x+b3y+c3)

this line passes through mid point of BC. The vertices B is (b1c2 - b2c1/a1b2 - a2b1 , a2c1 - c2a1/a1b2 - a2b1) and similarly find other vertices. Solve for   k   and substituting in 1st equation.


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28 Apr 2009 18:56:50 IST
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Equations for median of triangle :

x' =[x1+x2+x3]/3

Y'=[y1+y2+y3]/3

 


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7 Dec 2009 20:42:52 IST
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 the equation will be

a1 x + b1 y + c1+k(a2 x + b2 y + c2)=0 than tan thita/2=((-a1/b1+a3/b3)/1+a1a3/b1b3)/2=angle between median and a2 x + b2 y + c2 where k can be found out

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19 Jan 2010 12:21:39 IST
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Contest [swordfish #1]: Find the eqn. of the medians of a triangle

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22 Jul 2010 15:56:28 IST
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Prasoon Gupta


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10 Oct 2010 11:37:25 IST
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Contest [swordfish #1]: Find the eqn. of the medians of a triangle

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27 Oct 2010 20:06:47 IST
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pl sove it

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20 Dec 2010 19:41:49 IST
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Contest [swordfish #1]: Find the eqn. of the medians of a triangle

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23 Mar 2011 19:07:37 IST
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Contest [swordfish #1]: Find the eqn. of the medians of a triangle

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26 Mar 2011 18:22:11 IST
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Contest [swordfish #1]: Find the eqn. of the medians of a triangle

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30 Mar 2011 14:59:49 IST
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17 Apr 2011 23:27:58 IST
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Contest [swordfish #1]: Find the eqn. of the medians of a triangle

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15 Jul 2011 14:57:44 IST
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Contest [swordfish #1]: Find the eqn. of the medians of a triangle

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18 Jan 2012 13:14:19 IST
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Contest [swordfish #1]: Find the eqn. of the medians of a triangle



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