Citizen SR-270N Manual De Usuario

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•  To enter a mixed number, enter the integer part, press [ a 

b

/

c

 ], 

enter the numerator, press [ a 

b

/

c

 ], and enter the denominator ; To 

enter an improper fraction, enter the numerator, press [ a 

b

/

c

 ], and 

enter the denominator.  See Example 20.

•  By pressing [ 2nd ] [ 

d

/

c

 ], the displayed value will be converted to 

the improper fraction and vice versa. To convert between a deci-
mal and fractional result, press [ a 

b

/

c

 ] .See Example 21.

•  Calculations containing both fractions and decimals are calculated 

in decimal format.  See Example 22.

 

The angle units (DEG, RAD, GRAD) is set by pressing [ MODE ] to 
display the angle menu.  The relation among the three angle units 
is: 
 

 180 ° = 

π rad = 200 grad

Angle conversions ( See Example 23.) : 

1. 

Change the default angle settings to the units you  

 

 

want to convert  to.

2. 

Enter the value of the unit to convert.

3. 

Press [ DRG → ] to display the menu.

The units you can select are D (degrees),  

                 R (radians), G (Gradians).
 

4. 

Choose the units you are converting from.

5. 

Press [ = ].

•  The calculator provides standard trigonometric functions and 

inverse trigonometric functions - sin, cos, tan, sin 

–1

, cos 

–1

 and 

tan 

–1

. See Example 24~26.

(Note) :When using those keys, make sure the calculator is set for 

the angle unit you want.  

•  The calculator uses [ 2nd ] [ HYP ] to calculate the hyperbolic 

functions and inverse- hyperbolic functions - sinh, cosh, tanh, sinh 

–1

, cosh 

–1

 and tanh 

–1

. See Example 27~28.

(Note) :When using those keys, make sure the calculator is set for 

the angle unit you want.