If ` A+B+C=0^@ " then " sin A + sin B + sin C = `

If : A+B+C=pi, "then" : sin 2A + sin 2 B - sin 2 C= A) 4 sin A * cos B * cos C B) 4 sin B * sin C * cos A C) 4 sin C * cos A * cos B D) 4 sin A * sin B * sin C

In a triangle ABC . If cos Acos B + sin A sin B sin C = 1 , then sin A + sin B+ sin C =

A + B + C = 0 ^ (@) rArr sin A + sin B + sin C =

A + B + C = 0 ^ (0) rArr sin A + sin B + sin C =

Let cos A + cos B + cos C = 0 and sin A + sin B + sin C = 0 then which of the following statement(s) is/are correct?

if A + B + C = pi then (cos A) / (sin B sin C) + (cos B) / (sin C sin A) + (cos C) / (sin A sin B) =

If A+B+C=0 , then prove that sin 2A + sin 2B+ sin 2C=-4sin A sin B sin C .

If A+B+C= pi and cos A+cos B+cos C=0=sin A+sin B+sin C , then sin 3A+sin 3B+sin 3C =

In a Delta ABC " if " |(1,a,b),(1,c,a),(1,b,c)| =0 , then sin^(2) A + sin^(2) B + sin^(2) C is