<P> The small - angle approximation also appears in structural mechanics, especially in stability and bifurcation analyses (mainly of axially - loaded columns ready to undergo buckling). This leads to significant simplifications, though at a cost in accuracy and insight into the true behavior . </P> <P> The 1 in 60 rule used in air navigation has its basis in the small - angle approximation, plus the fact that one radian is approximately 60 degrees . </P>

For an angle of 10 degrees what is the percent difference in sin θ and θ in radians