tentukan nilai trigonometri berikut: sin 86 cos 26-cos86 sin 26/sin 49 sin86-cos 49 cos 86

Sin (86-26)°/-(cos 49 cos 86 - sin 49 sin 86)
=sin 60°/-(cos (49+86)°)
=½√3 / -(cos 135)
=½√3/ -(cos (180-45°))
=½√3 / - (- cos 45°)
=½√3 / ½√2
=√3/√2
=√3/2
=√¼.6
=½√6