Question

answer the first question

Answer 1

Pythagorean triplets are such that 

$a^{2} + b^{2} = c^{2}$

where c represents the hypotenuse while a and b are the legs of the right triangle.

Taking option A:

$a = 3, b = 4, c = 5$

$a^{2} + b^{2} = 3^{2}+4^{2} = 9 + 16 = 25$

$c^{2} = 5^{2} = 25$

Now since $a^{2} + b^{2} = c^{2}$

a, b, c are Pythagorean triplets.

Answer 2

i ) 3,4,5 is a Pythagorean triplet
ii ) 2,4,5 is not a Pythagorean triplet
iii) not a Pythagorean triplet
iv ) not a Pythagorean triplet

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