Texas Instruments TI-73 Explorer Manual Book page 218

212
Chapter 11: Trigonometry
Degrees ( ¡ )
90¡
180¡
270¡
To perform a trig calculation, select the Angle mode for your
value and then select the function. In
angles are often defined in terms of p.
³
Calculate sin(30) in both degrees and radians.
1. Select the
mode.
. # # b
2. Return to the Home screen,
and clear it, if desired.
- l :
3. Enter
sin(30)
- u
3 0
4. Change to the
mode, and return to the
Home screen.
. # # " b
- l
5. Recall the previous entry to
recalculate
- £ b
1¡= 1
of a circle
360
0¡, 360¡
Angle
Degree
.
1
E b
Angle
Radian
.
sin(30)
r
Radians ( )
p
2
p
0, 2p
3p
2
Angle mode,
Radian
= 1
r
1 of a circle
2p
r
Note: 1 = 57.29578¡