Texas Instruments TI-60 - Page 49

CHAPTER 1-6
CONVERSION KEYS
Press INV 2nd [P-R]
The « is displayed In the units selected by the DRG key
Press HhJ]
The R value is displayed
The range of V is from +180' to -180°, ir to - IT radians, and 200 to
- 200 grads
Example
Convert the rectangular coordinates (x « 5, y - 8) to polar coordinates
Press
OPF \\m
5 '»*»* 6
INV 2nd [P-R,
**»y
[ssn
Display
0
6
50 19442891
7 810249676
50 19442891
Comments
Clear calculator
Enter x and y
Find v coordinate
Find r coordinate
Restore a coordinate
The rectangular coordinates (5,6) convert to the polar coordinates
(7 810249676, 50.19442891')
Note that the S and R indicators are displayed to identity the » and r
coordinates, respectively
2nd [DMSODJ INV 2nd [DMS-DD] - Degrees/Mmutes/Seconds to
Decimal Degrees conversion keys
Angles in navigation and astronomy are often measured in
degree/minutestseconds. Before you can add these angles or use them In
trigonometric calculations, however, you must convert them to decimal
degrees These conversions also apply to hoursfminules/seconds and decimal
hours
39-QB