83 Test file number 158

  83.1 Problem number 154
  83.2 Problem number 174
  83.3 Problem number 175
  83.4 Problem number 176

Test folder name:

test_cases/5_Inverse_trig_functions/5.6_Inverse_cosecant/158_5.6.1_u-a+b_arccsc-c_x-^n