Nilai sin 80 cos 35 – cos 80 sin 35

Sin 80= 1
cos 35 = 0,5akar 3
cos80=0
sin35=0.5
jwb: sin80 cos 35- cos 80 sin 35
1 x 0.5akar3 – 0 x 0.5
0.86 – 0
0.86