sin(a-b)+2cosa*sinb=sina*cosb-cosa*sinb+2cosa*sinb=sina*cosb+cosa*sinb=sin(a+b)
a+b=0,17
sin(a+b)=sin 0,170,003
sin(a-b)+2cosa*sinb=sina*cosb-cosa*sinb+2cosa*sinb=sina*cosb+cosa*sinb=sin(a+b)
a+b=0,17
sin(a+b)=sin 0,170,003