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Triangle Solver App
This app calculates the lengths of sides and the sizes of angles in triangles. To open the Triangle Solver app, press
I
and select
Triangle Solver
.
The lengths of sides are represented by
a
,
b
, and
c
, and the angle opposite each side is
represented by
A
,
B
, and
C
respectively. Enter any 3 values—one of which must be a length—and
the app will calculate the other values. The menu items are:
•
: moves the cursor to the entry line where you can add or change a value. (You can
also just enter a value and press
E
.)
•
or
: toggles the angle measure between degrees and radians. Note that when
is showing, the angle measure is degrees, and when
is showing, the angle
measure is radians.
•
: toggles between input forms for general- and right-angle triangles (the latter requiring one less input)
•
: calculates the remaining values
Example
A triangle has sides of lengths 9 and 6. The angle opposite the side measuring 6 is 30
. Find the length of the third side.
Solution
1. If necessary, tap
to set the angle measure to degrees.
2. Enter
a
= 9,
b
=6, and
B
= 30.
3. Tap
to see the result.
The length of the third side is shown as
c
=11.76… Angles
A
and
C
are also calculated.
