Texas Instruments ti-30xs User Manual

Example

³ Problem

What is the area of a circle if the radius is 12 cm?
Reminder: A = Àr

The area of the circle is 144 À square cm. The area of the

circle is approximately 452.4 square cm when rounded to one

decimal place.

Angle menu

%I displays the choice of two submenus that enable

you to specify the angle unit modifier as degrees (º), minutes

('), seconds ("); radian (r); gradian (g), or convert units using
´DMS. You can also convert between rectangular coordinate

form (R) and polar coordinate form (P). (See Rectangular to

Polar for more information.)
Choose an angle mode from the mode screen. You can

choose from DEG (default), RAD, or GRAD. Entries are

interpreted and results displayed according to the angle mode

setting without needing to enter an angle unit modifier.

2 V g <

g V 12 G 2 <