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If: cos( A/2) = sqrt((b+c)/(2c)), then c...

If: `cos( A/2) = sqrt((b+c)/(2c))`, then `c^(2)=`

A

`a^(2)-b^(2)`

B

`a^(2) + 2b^(2)`

C

`a^(2) + b^(2)`

D

0

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The correct Answer is:
C
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