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Grade: 12th pass

                        

In a triangle,prove that sin 3A sin(B-C)+sin 3Bsin(C-A)+sin3C(A-B)=0

5 years ago

Answers : (2)

Saurabh Koranglekar
askIITians Faculty
8407 Points
8 months ago
Vikas TU
12285 Points
							
Dear student 
Dear student
Please approach using
( Sin A/ a) = ( sin B / b ) = ( sin C / c) = k
Expand sin 3A = 3ak - 4 ( ak)^3
If doubt still persists kindly revert for complete solution
Regards
8 months ago
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