Angle Unit Conversions; Sexagesimal ↔ Decimal Transformation; Trigonometric / Inverse-Tri. Functions; Hyperbolic / Inverse-Hyp. Functions - Citizen SR-270X College Instruction Manual

(Note) : 1. " " next to the resulting fraction signifies that the
fraction is not yet in simplest form.
2. "Fraction irreduc" appears that further simplification is
impossible.

Angle unit conversions

The angle unit (Deg, Rad, Grad) is set by pressing [ 2nd ] [ SET UP ]
from Setup screen and results are displayed according to your
setting.
The relation among the three angle units is:
Angle unit conversions (See Example 23.):
1) Change the default setting (Deg) to the unit you want to convert
to.
2) Enter the value of the unit to convert.
3) Press [ 2nd ] [ DRG ] to display the menu. The units you can
select are ° (degrees), r (radians), g (gradians).
4) Select the unit you are converting from, and press [ = ].
Sexagesimal ↔ Decimal transformation
You can use sexagesimal figure (degree, minute and second) to
perform calculations and convert values between sexagesimal and
decimal notation by using [ DMS ] or [ 2nd ] [
Example 24~25.
Sexagesimal figure value display is as follows:
125 45

Trigonometric / Inverse-Tri. functions

The calculator provides standard trigonometric functions and inverse
trigonometric functions: sin, cos, tan, sin
Example 26~28.
(Note) : When using those keys, make sure the calculator is set
for the angle unit you want.

Hyperbolic / Inverse-Hyp. functions

The calculator uses [ HYP ] to calculate the hyperbolic functions and
inverse-hyperbolic functions: sinh, cosh, tanh, sinh
–1
tanh . Press [ HYP ] to display the menu and then select the
corresponding number to perform the function item. See Example
29~30.
(Note) : When using those keys, make sure the calculator is set
for the angle unit you want.
File name : SR100DCollege_English_text_0531_final.doc
version : 10/05/31
180 ° = π rad = 200 grad
Represent 125 degrees (D),
‫׀‬ ‫׀ ׀‬
30
45 minutes(M), 30 seconds(S)
E – 13
DMS ] keys. See
–1 –1 –1
, cos and tan
–1 –1
, cosh
. See
and