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sin 30= 1/2
cos 60= 1/2
tan 45 - sin 30 + cos 60 = 1 - 1/2 + 1/2 = 1
sin 30 = 1/2
cos 60 = 1/2
jadi tan 45 - sin 30 + cos 60 = 1-1/2 + 1/2 = 1