Nilai sin 540 derajat +sin 180 derajat=

sin 540 = 0
sin 180 = 0 
sin 180 + sin 540 = 0 + 0 = 0 (Jika Derajat)

sin 540 = -0.34
sin 180 = -0.80
sin 180 + sin 540 = -0.34 + (-0.8) = - 1.14 ( Jika Radian)

sin 540° + sin 180°
=0 + 0
=0........