49 Test file number 76

  49.1 Problem number 37
  49.2 Problem number 49
  49.3 Problem number 50
  49.4 Problem number 51
  49.5 Problem number 80
  49.6 Problem number 218
  49.7 Problem number 219
  49.8 Problem number 220
  49.9 Problem number 221
  49.10 Problem number 248
  49.11 Problem number 265
  49.12 Problem number 272

Test folder name:

test_cases/4_Trig_functions/4.1_Sine/76_4.1.3.1-a+b_sin-^m-c+d_sin-^n-A+B_sin-