= 6.33 N = 1 + 2 = sin 30° + sin 60° 1 2 1 √3 = (5.0 ) ( ) + (4.0 ) ( ) 2 2 = 2.5 + 3.46 = 5.96 N 2 = √ + 2 2 = √(6.33 ) + (5.96 ) 2 = 8.7 tan = 5.96 tan = = 0.942 6.33 = tan −1 0.942 = 43.3° ⃑⃑⃑ ⃑⃑⃑⃑ 2 1