6.1 Angles and Their Measure/39

Failed to parse (syntax error): {\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} }