2-4-1

Function Calculations

2-4 Function Calculations

This section explains how to perform function calculations in the Main application work area.

Most of the operators and functions described in this section are input from the (math) and (catalog) keyboard. The actual keyboard you should use to perform the sample operations presented here is the one indicated by a 5 mark or by button names* (“TRIG”, “MATH”, “Cmd”, etc.) in one of the columns titled “Use this keyboard”.

* For more information about these buttons, see “Advanced Soft Keyboard Operations” (page 1-6-8).

You do not need to input the closing parenthesis that comes immediately before an  key operation. All of the calculation examples in this section omit the closing parentheses before .

The following example calculations are all performed using the Decimal mode. Using the Standard mode causes results to be displayed as fractions. For details about the Decimal mode and Standard mode, see “Status Bar Mode Indicators” on page 2-1-4.

IAngle Conversion (°, r )

The first two examples below use “Degree” (indicated by “Deg” in the status bar) as the angle unit setting. The final example uses “Radian” (indicated by “Rad” in the status bar) as the angle unit setting. Note that using the wrong angle unit setting will make it impossible to produce correct calculation results.

STo change the angle unit setting
(1) On themenu, tap [Basic Format].

(2) Tap the [Angle] down arrow button, and then select [Radian], [Degree] or [Grad].

For more information about this operation, see “1-9 Configuring Application Format Settings”.

ProblemUse this keyboard:

 

Operation

 

 

 

 

mthabccat

2D

 

 

 

 

 

 

 

 

Convert 4.25 radians toTRIGMATHCmd

 

4.25 1U

degrees.

 

 

 

 

 

= 243.5070629

 

 

 

 

 

 

 

 

 

 

 

47.3° + 82.5rad = 4774.20181°

TRIG

MATH

Cmd

 

47.3 82.5 1U

 

 

 

 

 

 

How many radians is

TRIG

MATH

Cmd

 

Change the [Angle] setting
243.5070629°?

 

 

 

 

to “Radian”, and then input

= 4.249999999

 

 

 

 

243.5070629 U.

 

 

 

 

 

 

Tip

You can also change the angle unit setting by tapping the current setting (Rad, Deg, or Gra) on the status bar. Each tap will cycle through the available settings.

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