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If the hypotenuse at a step is (\sqrt{n}), by which formula will the next hypotenuse be obtained?

Answer and explanation

Correct answer: \((\sqrt{n+1}) / (\sqrt{n+1})\)

The construction follows one repeated Pythagorean pattern. Suppose the current hypotenuse has length \(\sqrt{n}\), and a new perpendicular segment of length 1 is drawn from its endpoint. If the next hypotenuse is \(L\), then \(L^2=(\sqrt{n})^2+1^2=n+1\). Taking the positive square root, because a length is positive, gives \(L=\sqrt{n+1}\).

Thus the correct formula is option A. The expression \(\sqrt{n-1}\) would represent a smaller value, \(\sqrt{2n}\) would require a different construction, and \(\sqrt{n+2}\) would add 2 rather than the square of a unit side. The formula accurately describes every successive step of the spiral.

Related tags

Number-SystemsSquare-Root-SpiralGeneral-Rule

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