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Question
In a right triangle ABC, ∠B = 90° If AB = 6 cm, BC = 8 cm, find AC.
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Solution
ΔABC is right-angled at B.
Therefore, by applying Pythagoras theorem, we obtain
AC2 = AB2 + BC2
AC2 = (6 cm)2 + (8 cm)2
AC2 = (36 + 64) cm2 =100 cm2
AC = `(sqrt(100)) cm =(sqrt(10xx10)) cm`
AC = 10 cm.
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