An infinite slope is inclined at angle i and has its angle of internal friction `phi`, the stability number S a , is Options: A . &nbsp`(cos^2 i)/(tan i - tan phi)` B . &nbsp`(sin^2 i)/(tan i - tan phi)` C . &nbsp`(tan i - tan phi) cos^2 i` D . &nbsp`(tan i - tan phi )sin ^2 i`

An infinite slope is i

Question

An infinite slope is inclined at angle i and has its angle of internal friction `phi`, the stability number S_a, is

Options:

A . `(cos^2 i)/(tan i - tan phi)`

B . `(sin^2 i)/(tan i - tan phi)`

C . `(tan i - tan phi) cos^2 i`

D . `(tan i - tan phi )sin ^2 i`

Answer: Option C

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