Scientific Function Calculations; Trigonometric Functions - Casio fx-7400G Manual

u u u u u To specify the number of significant digits (Sci)
1. While the set-up screen is on the display, press 2 (Sci).
2. Press the function key that corresponds to the number of significant digits you
want to set (0 to 9).
• Press [ to display the next menu of numbers.
Example To specify three significant digits
2 (Sci)
4 (3)
Press the function key that corresponds to the number
of significant digits you want to specify.
• Displayed values are rounded off to the number of significant digits you specify.
• Specifying 0 makes the number of significant digits 10.
• A number of significant digit specification remains in effect until you change the
Norm Mode setting.
u u u u u To specify the exponential display range (Norm 1/Norm 2)
Press 3 (Norm) to switch between Norm 1 and Norm 2.
–2
Norm 1: 10 (0.01)>|x|, |x| >10
–9
Norm 2: 10 (0.000000001)>|x|, |x| >10

10. Scientific Function Calculations

Use the RUN Mode to perform calculations that involve trigonometric functions and
other types of scientific functions.

(1) Trigonometric Functions

Before performing a calculations that involves trigonometric functions, you should
first specify the default angle unit as degrees ( ), radians (r), or grads (g).
k k k k k Setting the Default Angle Unit
The default angle unit for input values can be set using the set up screen. If you set
degrees ( ) for example, inputting a value of 90 is automatically assumed to be 90
The following shows the relationship between degrees, radians, and grads.
90 = /2 radians = 100 grads
Basic Calculations
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Chapter 2
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1 2 3 4
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