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If the line x = y =z intersects the line...

If the line `x = y =z` intersects the line `xsinA+ysinB+zsinC-18=0=xsin2A+ ysin2B+2zsin2C -9`, where `A, B, C` are the angles of a triangle ABC, then `80(sin(A/2)sin(B/2)sin(C/2))` is equal to

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