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Right-angled Triangles, SM-Bank 013

Use Pythagoras' Theorem to decide if the numbers \(5 , 12\) and \(13\) form a Pythagorean triad.  (2 marks)

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\(\text{See worked solution}\)

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\(\text{Let }a=5 ,\ b=12\ \text{and }c=13\)

\(\text{Pythagoras’ Theorem states:  }a^2+b^2=c^2\)

\(\text{LHS: }\longrightarrow\ \) \(a^2+b^2\) \(=5^2+12^2\)
    \(=25+144\)
    \(=169\)
    \(=13^2=\text{RHS}\)

\(\therefore\ 5,\ 12\ \text{and }13\ \text{form a Pythagorean triad.}\)

Filed Under: Right-angled Triangles Tagged With: num-title-ct-core, smc-4218-20-Triads

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