" 14.If "B+C=60^(@)" ,prove that "sin(120^(@)-B)=sin(120^(@)-C)

If B+C=60^(@) then show that : sin(120^(@)-B)=sin(120^(@)-C)

Prove that sinA+sin(120^(@)+A)+sin(240^(@)+A)=0 .

If B + C = 60^@ , show that : sin (120^@- B) = sin (120^@ -C) .

sin theta+sin(120^(@)+theta)-sin(120^(@)-theta

If A + B + C = 180^(@) , prove that sin^(2)A + sin^(2)B - sin^(2)C = 2 sin A sin B cos C

Time period of sin x sin(120^(@)-x)sin(120^(@)+x)=

The period of sin x sin(120^(@) + x) sin(120^(@) -x) is

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

Prove that: sinA. Sin(60^(2)+A).sin(120^(@)+A)=1/4sin3A

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