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In a Delta ABC, sin ^(4) A + sin ^(4) B...

In a `Delta ABC, sin ^(4) A + sin ^(4) B + sin ^(4) C =`

A

`3/2 + 2 cos A cos B cos C + 1/2 cos 2 A cos 2 B cos 2 C`

B

`2 cos A cos B cos + 1/2 2A cos B cos 2 C`

C

`2 cos A cos B cos C + 1/2 cos 2A cos 2B`

D

`2 cos A cos B cos C + cos 2 A cos 2B`

Text Solution

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