Evaluate
\frac{\sqrt{2}}{2}\approx 0.707106781
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\frac{2\sqrt{2}}{4}
Factor 8=2^{2}\times 2. Rewrite the square root of the product \sqrt{2^{2}\times 2} as the product of square roots \sqrt{2^{2}}\sqrt{2}. Take the square root of 2^{2}.
\frac{1}{2}\sqrt{2}
Divide 2\sqrt{2} by 4 to get \frac{1}{2}\sqrt{2}.
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