In a triangle ABC,prove that sin3Asin(B-C)+sin3Bsin(C-A)+sin3Csin(A-B)=0 ,please solve this question help me somebody

Grade:Select Grade

1 Answers

Vijay Mukati
askIITians Faculty 2590 Points
7 years ago
Hint: Take the first term i.e. sin3Asin(B-C). Use the identity for 2sinAsinB. Do this for all the three terms given in the question. Then try to use the concept that A+B+C = pi. using it try to make the same angles which can be cancelled after that. Thanks.

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy


Get your questions answered by the expert for free