BUTTONS ON MY MAC CALCULATOR APP I DON'T KNOW HOW TO USE

What. I never made it past Algebra II!
  1. 2nd
  2. Rad
  3. Sin
  4. Cos
  5. Tan
  6. E
  7. EE
  8. Sinh
  9. Cosh
  10. Tanh
  11. Ln
  12. Log^10
  13. Mc
  14. M+
  15. M-
  16. Mr
  17. Rand