StartFraction 16.1 over sine (35 degree) EndFraction equals StartFraction 18.7 over sine (B) EndFraction. StartFraction 18.7 over sine (35 degree) EndFraction equals StartFraction 16.1 over sine (B) EndFraction. StartFraction 18.7 over 16.1 EndFraction equals StartFraction sine (35 degree) over sine (B) EndFraction.