2(cos 30°) + ½ (tan 45°) - ⅔ sin 60°

2(√3/2) + ½(1) - ⅔(√3/2)
= 2√3/2 + 1/2 - √3/3
= 6√3/6 + 3/6 - 2√3/6
= (6√3 - 2√3 + 3)/6
= (4√3 + 3) / 6

jawaban : terlampir

semoga berguna +_+