The active earth pressure of a soil is proportional to (where φ is th – McqOptions

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1.	The active earth pressure of a soil is proportional to (where φ is the angle of friction of the soil)
A.	tan (45° - φ)
B.	tan² (45° + φ/2)
C.	tan² (45° - φ/2)
D.	tan (45° + φ)
Answer» D. tan (45° + φ)

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