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( a- b) ^(2) cos ^(2) ""(C ) /(2) + ( a+...

` ( a- b) ^(2) cos ^(2) ""(C ) /(2) + ( a+b) ^(2) sin ^(2) "" ( C )/(2) = `

A

`a^(2) `

B

`b^(2)`

C

`c^(2)`

D

none of these

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-PROPERTIES OF TRIANGLES-LECTURE SHEET EXERCISE - I ( Straight Objective Type Questions )
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  10. If the lengths of the sides of triangle are 3, 5, and 7, then the larg...

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