Press .

To change a setting, use the cursor to highlight the desired option and press .

**Exponential Format** specifies normal, scientific, or engineering notation.

**Display Digits** indicates the number of digits and format.

**Angle** sets the calculator to interpret angles as radians or degrees.

**Complex Format** specifies rectangular, or polar display of complex
values.

**Graph** indicates the type of graph.

**Base** indicates what base the TI-85 will display values in.

**Vector Format** specifies whether vectors are displayed in rectangular,
cylindrical, or spherical form.

**Differention Type** sets the method for calculating derivatives
for the graphing functions, numerical or exact.