1.

In a ΔABC, prove thatsin3 A cos (B−C)+sin3 B cos (C−A)+sin3 C cos (A−B)=3 sin A sin B sin C

Answer»

In a ΔABC, prove thatsin3 A cos (BC)+sin3 B cos (CA)+sin3 C cos (AB)=3 sin A sin B sin C



Discussion

No Comment Found