![background image](http://html1.mh-extra.com/html/texas-instruments/34-ii-explorer-plus/34-ii-explorer-plus_user-manual_1094302101.webp)
© 1999 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI
-
34
Û
: A Guide for Teachers
95
Trigonometry
13
Keys
The numbered paragraph provides an
explanation for the corresponding numbered
key on the illustration below.
1.
%
B
displays a menu of all
trigonometric functions (sin, sin
-1
, cos,
cos
-1
, tan, tan
-1
).
sin calculates the sine.
sin
-1
calculates the inverse sine.
cos calculates the cosine.
cos
-1
calculates the inverse cosine.
tan calculates the tangent.
tan
-1
calculates the inverse tangent.
Notes
•
The examples on the transparency
masters assume all default settings.
•
Before starting a trigonometric
calculation, be sure to select the
appropriate angle-unit setting (degree or
radian—See Activity 16,
Angle Settings
and Conversions). The calculator
interprets values according to the
current angle-unit setting.
•
E
ends a trig function.
1