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sum (b^(2) -c^(2))/( a^(2)) sin ^(2) A =...

` sum (b^(2) -c^(2))/( a^(2)) sin ^(2) A = `

A

0

B

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

C

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

D

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

Text Solution

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A
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