Trigonometry on your Ti-89
- To see your degree/radian setting, look at the bottom of the screen, its the second word from the left. It should say Deg Auto, or Rad Auto. Deg auto means your working in degrees, and rad auto means your working in radians.
- To change setting, click "Mode"->click down arrow 3 times,click right arrow->use up and down arrow to select radian or degree, click enter.
- Use like a ti-83/84