Question

pythagorean triplet 15 12

Answer 1

the triplet for 15,12 is 9

Answer 2

Pythagorean triplets follow the condition
$a^{2} + b^{2} = c^{2}$

Lets assume that the third integer be "a" so it will follow the condition
a²+12²=15²
a=√(15²-12²)
a=√81
a=9

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