reference/math/functions/hypot.xml
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right-angle triangle with sides of length <parameter>x</parameter> and
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<parameter>y</parameter>, or the distance of the point
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(<parameter>x</parameter>, <parameter>y</parameter>) from the origin.
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This is equivalent to <literal>sqrt(x*x + y*y)</literal>.
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This is equivalent to <code>sqrt($x*$x + $y*$y)</code>.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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