6.1 Angles and Their Measure/39

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://en.wikipedia.org/api/rest_v1/":): {\displaystyle -60^{\circ}\cdot\frac{\pi}{180^{\circ}}=\frac{-(\cancel{2}\cdot \cancel{2}\cdot \cancel{3}\cdot \cancel{5})}{1}\cdot\frac{\pi}{\cancel{2}\cdot \cancel{2} \cdot \cancel{5} \cdot \cancel{3} \cdot 3} = -\frac{\pi}{3} }