Texas Instruments TI-89, TI-92

Appendix B: Reference Information 551

8992APPBDOC TI

89/TI

92Plus:8992a

bdoc (English) SusanGullord Revised:02/23/01 1:54 PM Printed:02/23/01 2:24 PM Page551 of 34

Specifies the units in which angle values are interpreted and

displayed in trig functions and polar/rectangular conversions.

1:RADIAN

2:DEGREE

Specifies which notation format should be used. These formats

affect only how an answer is displayed; you can enter a number in

any format. Numeric answers can be displayed with up to 12 digits

and a 3-digit exponent.

1:NORMAL Expresses numbers in standard format. For

example, 12345.67

2:SCIENTIFIC Expresses numbers in two parts:

¦ The significant digits display with one digit to

the left of the decimal.

¦ The power of 10 displays to the right of E.

For example, 1.234567E4 means 1.234567×104

3:ENGINEERING Similar to scientific notation. However:

¦ The number may have one, two, or three

digits before the decimal.

¦ The power-of-10 exponent is a multiple of

three.

For example, 12.34567E3 means 12.34567×103

Note: If you select NORMAL, but the answer cannot be displayed in

the number of digits selected by Display Digits, the TI-89 / TI-92 Plus

displays the answer in SCIENTIFIC notation. If Display Digits = FLOAT,

scientific notation will be used for exponents of 12 or more and

exponents of ì4 or less.

Specifies whether complex results are displayed and, if so, their

format.

1:REAL Does not display complex results. (If a result is a

complex number and the input does not contain

the complex unit i, an error message is

displayed.)

2:RECTANGULAR Displays complex numbers in the form: a+bi

3:POLAR Displays complex numbers in the form: rei

Angle

Exponential Format

Complex Format