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In triangle ABC if a^(4) + b^(4) + c^(4)...

In triangle ABC if `a^(4) + b^(4) + c^(4) = 2a^(2)b^(2) + 2b^(2)c^(2)` then the values of B will be-

A

`45^(@)`

B

`115^(@)`

C

`120^(@)`

D

`60^(@)`

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The correct Answer is:
A
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