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In an Agrad plane z(1),z(2) and z(3) ar...

In an Agrad plane `z_(1),z_(2) and z_(3)` are, respectively, the vertices of an isosceles trinagle ABC with AC= BC and `/_CAB = theta`. If `z_(4)` is incentre of triangle, then
The value of `AB xx AC// (IA)^(2)` is

A

`|((Z_2-Z_1)(Z_1-Z_3))/((Z_4-Z_1))|`

B

`|((Z_2-Z_1)(Z_3-Z_1))/((Z_4-Z_1))|`

C

`|((Z_2-Z_1)(Z_3-Z_1))/((Z_4-Z_1)^2)|`

D

`|((Z_2-Z_1)(Z_3-Z_1))/((Z_4+Z_1))|`

Text Solution

Verified by Experts

The correct Answer is:
C
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