Question 70742: A triangle plot of land has sides of lengths 130ft, 110ft, and 100ft. Approximate the smallest angle between the sides.
Answer by venugopalramana(3286)   (Show Source):
You can put this solution on YOUR website! A triangle plot of land has sides of lengths 130ft, 110ft, and 100ft. Approximate the smallest angle between the sides.
AB=130,BC=110,CA=100
SMALLEST ANGLE IS OPPOSITE SMALLEST SIDE CA OF 100'= ANGLE ABC
AC^2=AB^2+BC^2-2AB*BC*COS(ABC)
COS(ABC)=[AB^2+BC^2-AC^2]/[2AB*BC]=0.664336
ANGLE ABC = 48.4 DEG.
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