code: def main():
      fun1 = cos(x) * sin(y)
      fun2 = sin(x) * sin(y)
      fun3 = cos(y) + log(tan(y / 2)) + 0.2 * x
  
      PygletPlot(
          fun1, fun2, fun3, [x, -0.00, 12.4, 40], [y, 0.1, 2, 40]
      )
  
imports: from sympy import Symbol, cos, sin, log, tan
  from sympy.plotting import PygletPlot
  from sympy.abc import x, y
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types