Question $16$

$3$ pts

Point A lies in a soil mass composed of sand with $c^{\text{'}}=0.$ Point $A$ is in the active condition. The major principal effective stress at point $A$ is $90\mathrm{.}2$kPa, and the minor principal effective stress at point $A$ is $26\mathrm{.}6kP.$ What is the friction angle $($: $)$ of the sand? Express your answer in degrees but write only the numeric answer in the text box.

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