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Question

In ΔABC, AB<AC, PB and PC are the bisectors of B and C. Prove that PB<PC.

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Solution

In the figure.

The angle opposite to a larger side is larger than the angle opposite to a smaller side.

It is given

AB<AC

BP is the bisector of B


So,

1=2=12B


CP is bisector of C

3=4=12C


Angle opposite to AB is C and angle opposite to AC is B.


Now, from the property

As AB<AC


So,

C<B

12C<12B

4<2


Side opposite to 2 is PC and side opposite to 4 is PB.


Hence,

4<2

PB<PC


Hence, Proved.


1298464_1132187_ans_a563203d2dd5414ab1f6b9d3dcc72d71.jpg

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