in fig.if <ACB=30'(degree) AC=100m, then find AB, where AB perpendicular to BC
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by using trigonometry formyla in traingle ABC ,
sinC = AB/AC
sin 30 = AB/100
1/2 = AB/100
AB = 50
sinC = AB/AC
sin 30 = AB/100
1/2 = AB/100
AB = 50
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