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प्रश्न
If the sides of a triangle are in the ratio 5 : 12 : 13 then, it is ________
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उत्तर
a right angled triangle
Explanation;
Hint:
132 = 169
52 = 25
122 = 144
169 = 25 + 144
∴ 132 = 52 + 122
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*(l, m, n are opposite sides of ∠L, ∠M, ∠N respectively)
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