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6\times \frac{\sqrt{2}}{2}+\left(\frac{1}{3}\right)^{-1}+1+5-3\sqrt{2}-1
Get the value of \cos(45) from trigonometric values table.
3\sqrt{2}+\left(\frac{1}{3}\right)^{-1}+1+5-3\sqrt{2}-1
Cancel out 2, the greatest common factor in 6 and 2.
3\sqrt{2}+3+1+5-3\sqrt{2}-1
Calculate \frac{1}{3} to the power of -1 and get 3.
3\sqrt{2}+4+5-3\sqrt{2}-1
Add 3 and 1 to get 4.
3\sqrt{2}+9-3\sqrt{2}-1
Add 4 and 5 to get 9.
9-1
Combine 3\sqrt{2} and -3\sqrt{2} to get 0.
8
Subtract 1 from 9 to get 8.