SOLUTION: in a triangle ABC angle A=30,angle B=90 and AB is 12 cm,find the length of BC

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Question 853740: in a triangle ABC angle A=30,angle B=90 and AB is 12 cm,find the length of BC

Answer by fcabanski(1391) About Me  (Show Source):
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This is a 30 60 90 triangle. Use the ratios of the lengths of sides of a 30 60 90 triangle to find BC, which is the side opposite the 30 degree angle.