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Find the incentre of the triangle with v...

Find the incentre of the triangle with vertices `A(1,sqrt3), B(0,0)` and `C(2,0)`.

A

`(1, sqrt3/2)`

B

`(2/3,1/sqrt3)`

C

`(2/3,sqrt3/2)`

D

`(1,1/sqrt3)` .

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