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In a triangle ABC, /B=90^(@) and /C=2/A ...

In a triangle ABC, `/_B=90^(@)` and `/_C=2/_A` , then what is `AB^(2)` equal to ?

A

`2BC^(2)`

B

`3BC^(2)`

C

`4BC^(2)`

D

`5BC^(2)`

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