1. In AABC, ZC 90°.
If BC = a, AC = b and AB = c, find :
(i) c when a = 8 cm and b = 6 cm.
(ii) a when c = 25 cm and b = 7 cm
(iii) b when c = 13 cm and a = 5 cm
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Answer:
Given, ∠C=90
∘
AB=13 cm BC=5 cm
AB
2
=AC
2
+BC
2
(By Pythagoras theorem)
13
2
=AC
2
+5
2
169=AC
2
+25
AC
2
=144
AC=12 cm
b=12 cm
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