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What is the correct reason for (\sqrt{3}) being formed from (\sqrt{2}) in a square root spiral?

Answer and explanation

Correct answer: ((\sqrt{2})^2+1^2=3)

The spiral does not obtain a new length by simply adding the two side lengths. Instead, each new figure is a right triangle, so the Pythagorean theorem must be used. The square of the new hypotenuse equals the sum of the squares of the old hypotenuse and the new unit perpendicular. This explains why the radical changes from 2 to 3.

For the given construction, the two perpendicular sides have lengths sqrt{2} and 1. Therefore the new hypotenuse h satisfies h^2=(sqrt{2})^2+1^2=2+1=3. Since a length is positive, h=sqrt{3}. The expression sqrt{2}+1 is not equal to sqrt{3}, and the other numerical statements do not represent the theorem. Hence option A is correct.

Related tags

Square-Root-SpiralPythagorasSqrt3

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