In a triangle ABC, Prove that a 3 cos(B-C)+b 3 cos(C-A)+c 3 cos(A-B)=3abc.

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avinash · Answer

See bro solve and break the value of sin and cos as it is....apply concept of SOT...that`s it.. common solve it

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In a triangle ABC, Prove that a 3 cos(B-C)+b 3 cos(C-A)+c 3 cos(A-B)=3abc.

In a triangle ABC, Prove that a³cos(B-C)+b³cos(C-A)+c³cos(A-B)=3abc.

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In a triangle ABC, Prove that a 3 cos(B-C)+b 3 cos(C-A)+c 3 cos(A-B)=3abc.

In a triangle ABC, Prove that a3cos(B-C)+b3cos(C-A)+c3cos(A-B)=3abc.

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In a triangle ABC, Prove that a³cos(B-C)+b³cos(C-A)+c³cos(A-B)=3abc.