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Tick the correct answer and a justify :In `triangleABC,AB=6sqrt3,AC=12cm` and BC=6cm.The angle B is
a)`120^@` b)`60^@` c)`90^@` d)`45^@`

A

`120^@`

B

`60^@`

C

`90^@`

D

`45^@`

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R G PUBLICATION-TRIANGLES-EXERCISE
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