76 Test file number 142

  76.1 Problem number 203
  76.2 Problem number 204
  76.3 Problem number 205
  76.4 Problem number 206
  76.5 Problem number 207
  76.6 Problem number 208

Test folder name:

test_cases/5_Inverse_trig_functions/5.1_Inverse_sine/142_5.1.2-d_x-^m-a+b_arcsin-c_x-^n