6.1 Angles and Their Measure/36

Failed to parse (syntax error): {\displaystyle \frac{\pi}{2}^{\circ}\cdot\frac{180^}{\pi}^{\circ}}=\frac{\cancel{2}\cdot \cancel{2}\cdot 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{2\pi}{3} }