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my text book on soils engineering advises that the lateral earth pressure coefficient is determined by: (1-sin(x))/(1+sin(x)), however it also advises that by simple trigonometry this can also be written as tan^2(pi/4-(x)/2). how do you get from the first to equal the second using trigonometry?
Date Posted: 5 years ago
Views: 160
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done
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Date Posted:
5 years ago
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