User's Manual

304 The Explorer apps
Trig Explorer app
The Trig Explorer app can be used to investigate the
behavior of the graphs and
as the values of a, b, c and d
change.
The menu items available in this app are:
• or : toggles between graph mode and
equation mode
• or : toggles between sine and cosine
graphs
• or : toggles between radians and
degrees as the angle measure for x
• or : toggles between translating the
graph ( ), and changing its frequency or
amplitude ( ). You make these changes using
the cursor keys.
• : enters test mode
• or : toggles the increment by which
parameter values change: /9, /6, /4, or 20°,
30°, 45° (depending on angle measure setting)
Open the app Press I and select
Trig Explorer.
An equation is shown at
the top of the display,
with its graph shown
below it.
Choose the type of
function you want to explore by tapping either or
.
ya bxc+sin d+=
ya bxc+d+cos=