Descent of road

The road sign informs us the gradient is 10.9%. Calculate the angle at which the average decreases.

Correct answer:

x =  6.2 °

Step-by-step explanation:

q=10.9%=10010.9=0.109   tan α = y:x = q  α=arctanq=arctan0.1090.1086 rad  x=α  °=α π180   °=0.1086 π180   °=6.2  °=6.2=6°1314"



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