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

If A+B+C=0^(@) then sin A +sin B+sin C=

If A+B+C=0^@ " 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 =

(iii) a cosA + b cos B + c cos C = 4R sin A sin B sinC

If A+B+C=0^(@) then prove that sinA+sinB-sinC=-4"cos"A/2"cos"B/2"sin"C/2

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 , prove that sin 2A+sin 2B+sin 2C=4 sinA sin B sinC.

If A,B,C be the angles ofa triangle then prove that (sin A + sin B)(sin B + sin C)(sinC + sinA) gt sin A sin B sinC .

If A + B + C =180^@ , prove that : sin (B+C-A) + sin(C+ A-B)+ sin(A +B-C)=4sin A sinB sinC .