Ladder slope

What is the slope of a ladder 6.2 m long and 5.12 m in height.

Correct result:

A =  55.6703 °

Solution:

c=6.2 m a=5.12 m A1=arcsin(a/c)=arcsin(5.12/6.2)0.9716 A=A1=A1 180π=0.9716 180π=55.67=55.6703=554013"

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