How to Put Degree on Graphing Calculator

Adding degree symbols to your graphing calculator display can make your work more professional and clear. This guide explains how to properly display degrees on different calculator models, including TI, Casio, and HP calculators.

How to Display Degrees on Your Calculator

Most graphing calculators default to radians, but you can easily switch to degrees. Here's how to do it:

Note: The method to display degrees varies slightly between calculator brands. Follow the instructions specific to your model.

Step-by-Step Instructions

Turn on your calculator and wait for it to initialize.
Press the "Mode" button (usually labeled "MODE" or "SETUP").
Look for an option that says "Angle Unit" or "Deg/Rad".
Use the arrow keys to navigate to the angle unit setting.
Press the "Enter" or "OK" button to select degrees.
Verify that the display shows "DEG" or "°" to confirm you're in degree mode.

Once you've set your calculator to degree mode, all trigonometric functions (sin, cos, tan) will use degrees instead of radians. For example, entering "sin(30)" will now return 0.5 instead of approximately 0.5236.

Calculator-Specific Instructions

TI-84 Series

Press the "Mode" button (second button from the left on the top row).
Use the arrow keys to highlight "Degree".
Press "Enter" to select degrees.
Check that the top line of the display shows "Deg" to confirm.

Casio fx-9860G II

Press the "Shift" button, then the "Setup" button.
Use the arrow keys to select "Angle Unit".
Press "Enter" to choose degrees.
Verify the display shows "DEG" in the angle unit indicator.

HP Prime

Press the "Settings" button (looks like a gear icon).
Select "Angle Unit" from the menu.
Choose "Degree" from the options.
Confirm the angle unit display shows "°".

Common Mistakes to Avoid

1. Forgetting to Set Degrees

Many students forget to switch their calculator to degree mode, leading to incorrect results. Always double-check your angle unit setting before performing trigonometric calculations.

2. Mixing Degrees and Radians

If you accidentally switch between degrees and radians, your results will be completely different. For example, sin(30°) = 0.5, but sin(30 radians) ≈ 0.5236.

3. Not Using the Correct Symbol

While most calculators display degrees automatically when in degree mode, some may require you to manually type the degree symbol (°). Check your calculator's manual for specific instructions.

Frequently Asked Questions

Can I switch between degrees and radians on my calculator?: Yes, most graphing calculators allow you to toggle between degree and radian modes. Simply go to the angle unit setting and change it as needed.
Why does my calculator show different results for the same angle?: This usually happens when your calculator is set to radians instead of degrees. Check your angle unit setting and switch to degrees if needed.
How do I know if my calculator is in degree mode?: Look for a "DEG" or "°" indicator in the display. Some calculators show this in the top line or near the angle unit setting.
Can I use degrees with all trigonometric functions?: Yes, once your calculator is set to degree mode, all trigonometric functions (sin, cos, tan, etc.) will use degrees as their input and output units.
What if my calculator doesn't have a degree mode?: If your calculator doesn't support degree mode, you'll need to convert all angles to radians before performing calculations. Use the conversion factor π/180 to convert degrees to radians.