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In any triangle ABC,a 3 cos(B-C)+b 3 cos(C-A)+c 3 cos(A-B) is equal to?

In any triangle ABC,a3cos(B-C)+b3cos(C-A)+c3cos(A-B) is equal to?

Grade:12

2 Answers

Saurabh Koranglekar
askIITians Faculty 10336 Points
2 years ago
Dear student

Please write the Question in complete form or attach an image of the question

Regards
Vikas TU
14149 Points
2 years ago
Dear student 
Question is not clear 
Please attach an image, 
We will happy to  help you 
Good Luck
Cheers
 

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