In a right triangle ABC, angle B= 90° . (i) if AB =6 cm , BC =8cm, find AC. (ii) if AC= 17cm ,BC=15 cm , find AB
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Step-by-step explanation:
(i) given :
∠B = 90°
AB = 6cm
BC = 8cm
find : AC
AC² = BC²+AB²
= 8² + 6²
= 16 + 12
AC = √28cm
(ii) given :
B=90°
AC = 17cm
BC = 15cm
find : AB
AC² = BC²+AB²
17² = 15² + AB²
289 = 225 + AB²
225 - 289 = AB²
√64 = AB
8cm = AB
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Answer:(i) AC=10cm, (ii)AB=8cm
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