The vertices of  a triangle are A(5,4,6) ,B(1,-1,3)&C(4,3,2). The internal bisector of angleA meetsBC at D. Find the coordinates of D and the length AD  

Dear Student!

Here is the answer to your query.

 

Given : The coordinates of A, B, C are (5, 4, 6), (1, –1, 3), (4, 3, 2) respectively and angle bisector of A meets BC at D.

 

Then  

∴ BD : CD = 5 : 3

 

Now using section formulae coordinates of D are 

 

Cheers!

  • 26

bd/cd=ab/ac???????

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