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sudut jam =4 30/60 × 30° = 4½×30°=135°
sudut menit=30 × 6° = 180°
Sudut terkecil = 180-135=45°
b.pukul 07.20
sudut jam =7 20/60 × 30° = 7⅓×30°=220°
sudut menit=20 × 6° = 120°
Sudut terkecil = 220-120=100°
c pukul .09.01
sudut jam =9 1/60 × 30° =270,5°
sudut menit=1 × 6° = 6°
Sudut terkecil = 360-270,5+6=95,5°
d.pukul 10.40
sudut jam =10 40/60 × 30° =10⅔×30°=320°
sudut menit=40 × 6° = 240°
Sudut terkecil = 320-240=80°