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In Delta ABC ,(a-b)^(2)cos ^(2) (c /2) ...

In` Delta ABC ,(a-b)^(2)cos ^(2) (c /2) +(a+b)^(2) sin ^(2)""(c )/(2)`=

A

`b^(2)`

B

`c^(2)`

C

`a^(2)`

D

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

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The correct Answer is:
B
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