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ABC is a triangle right angled at A, AB...

ABC is a triangle right angled at `A, AB=2AC, A=(1,2), B (-3,1)`. The vertices of the triangles are in anticlockwise sense. BCEF is a square with vertices in clockwise sense. Area of triangle ACF is:

A

`-(1)/(4)`

B

`-(3)/(4)`

C

`-(5)/(4)`

D

`-(7)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
D
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