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Prove that the square of the length of the angle bisector AL=bc[1-{a/(b+c)}^2] where AB=c,BC=a and CA =b

Prove that the square of the length of the angle bisector AL=bc[1-{a/(b+c)}^2] where AB=c,BC=a and CA =b

Grade:10

1 Answers

Anshuman Chandel
24 Points
10 years ago

apply cos rule in the two trianlgles formed and solve simultaneously.

 

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