HP (Hewlett-Packard) NW280-1001 ユーザーズマニュアル

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This app calculates the lengths of sides and the sizes of angles in triangles. To open the Triangle Solver app, press 

I

 and select 

. 

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.