+118658 what is the angle which the sin is 2*sqrt(5)/3*sqrt(3)
\(sin\theta\;=\frac{2\sqrt5}{3\sqrt3}\\ sin\theta\;=\frac{2\sqrt5*\sqrt3}{3\sqrt3*\sqrt3}\\ sin\theta\;=\frac{2\sqrt{15}}{3*3}\\ sin\theta\;=\frac{2\sqrt{15}}{9}\\\)
asin(2/9*sqrt(15)) = 59.391102340291
\(\theta \approx 59.39 \;degrees\)
