Ti-Nspire gives me coordinates in radians when my mode is set to degrees.

SOURCE: how do I get from degrees to radians? For some

Press the [MODE] key to access the mode comfiguration screen .
Set angle unit to to radian (see above)
Enter angle value in Decimal degrees only, use the [2nd][ANGLE] key sequence to have access to the degree symbol. The degree symbol must imperatively appear at the end of the angle value.



Here are some examples
If you use angle values in DMS, it will not be converted to radians, but to decimal degrees.
If you omit the degree symbol there is no conversion.



A general formula is Pi radians =180 degrees

SOURCE: How to plot a graph on TI-83 plus texas calculator?

Prepare calculator to graph

Turn StatPlotsOff to avoid errors:
Press [2nd][STATPLOT][4:PlotsOff][ENTER].


Setup Graph type

• Press [MODE] key.
• In Mode set up screen, make sure that the angle unit is the degree.
• Use the arrows to move cursor to 3rd line to highlight {degree} and press [ENTER]
• On same screen, verify that Func is highlighted.
• If it is not, use arrow to highlight Func and press [ENTER] to validate.
• Do not worry if you do not have exactly the same screen as in the screen picture (We may have different OS Versions)
  

• Press [Y=] to enter function editor.
• Type in a function
  
• Press [ENTER] at the end of each function.
• Before pressing [GRAPH], make sure that all the = signs that define the functions to be graphed are highlighted white on black. If one is not highlighted, use arrow to move cursor on the sign and press [ENTER].
• In the screen capture 4 functions are slated to be drawn.
  

• Select the graph style: The small piece of line to the left of a Y that defines a function is the style.
  
• Move cursor on it and press [ENTER] .
  
• Each [ENTER] (on same line) selects another style.
• On the next screen you have all the styles available on the calculator.
• Do not select the bubble on line 6: It is for animations. It will not leave a trace at the end of the plot.
  

• Press [GRAPH] to see the graphs.
• If one of them is missing, verify that its = is still highlighted, then use the [WINDOW] to set the Window dimensions,
• Here are the dimensions of the standard window
  

Testimonial: "Thank you so much for your kindness in helping me. "

SOURCE: my graphing calculator reads err:invalid dim. How do I fix that?

A previously posted solution, taken from my Web page without permission, was removed by the admins at my request. The person who posted it should have asked first and should have credited me. Here is my solution:
==========================================
This message has several possible causes.

• If you get this when making some kind of plot, you probably forgot that you have one of Plot1 Plot2 Plot3 turned on, and it refers to two lists that don't have the same length. The cure is to press [Y=] and turn off the unwanted plot.
• If you’re actually doing something that needs lists, such as a regression, but your lists don’t have the same length, you get this message. Press [STAT] [1] and check your lists.
• You also get this message when you give the TI-83 a list or matrix where it expected a variable or number, or vice versa. For instance, on the STAT PLOT screen, you may mean to press [2nd] [L1] but if you miss the [2nd] you actually type a Y. In the same way you might type a Z where you intend to type L2.
• Karl Wein offers another possibility. You can create a list called L1, but that is not the same as the predefined list called L1 (note the small-capital L), and of course similarly for lists 2 through 6. If you accidentally delete a predefined list from the editor, make sure to bring it back with the SetUpEditor command.

SOURCE: I have the TI-Nspire CAS

Yes, you guessed right. Your configuration is set to Fix 0 AND scientific.
You can reset the calculator or you can change configuration (should be better to do the latter.)

I am describing the procedure for the CAS with OS version 2.1 But it should work for your calculator.
Turn calculator ON
Press The HOME (House iscon) button.
Press digit key 5 to open Settings and status.
In menu options, select [2:Settings]
Use the arrow (right) to open the submenu options and select [1:General]
The cursor should be on drop down box labeled Display Digits (You might see FIX 0, meaning 0 decimal digits, or 0 digits in mantissa of the number)
Use down arrow to open the number display format, and select Float 6 (an appropriate choice most of the time. If you want more digits, set Float 12)
Press [ENTER] or Click to validate your selection.
The drop down box will close.

Use the TAB button to move to another Configuration setting. Pressing the TAB twice will take you to Exponential format.
Use down arrow to unfold the Exponential format menu.
If you do not need Scientific Format, use Normal and validate.
Press TAB several times until cursor reaches OK.
At this point Press ENTER to save Configuration.
This should solve the problem.

As I said, this describes the procedure for OS version 2.1. Once you find out how to enter the setting screen, do as I described above, and do not forget to validate by getting the cursor on OK and validate.

Good luck.

Testimonial: "thanks so much. That has been a great help for me."

SOURCE: how do I get my

The following screen captures pertain to TI Nspire OS 2.1
Turn calculator ON. It calculator is not in HOME screen press the HOME button.

Press digit key 5:Settings and status. Select 2:Settings, then 1:General





On sdecond line Angle open the drop down window and select Degree.

Use TAB a few times to move cursor to the OK button. and press ENTER.