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$\frac{4.28 \times 0.01677}{tan 20^o}$
No log
4.28 0.6314
0.01677 -2.2245
-2. 8559
Tan 20o -1.5611
-1.2948
= 0.1971
johnmulu answered the question on November 20, 2017 at 06:08
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