Evaluate
8\sqrt{2}\approx 11.313708499
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16\cos(45)
Multiply 2 and 8 to get 16.
16\times \frac{\sqrt{2}}{2}
Get the value of \cos(45) from trigonometric values table.
8\sqrt{2}
Cancel out 2, the greatest common factor in 16 and 2.
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