Trigonometric / Inverse-Tri. Functions; Hyperbolic / Inverse-Hyp. Functions; Coordinates Transformation - Citizen SRP-280 Instruction Manual

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 [ DMS ] to display the menu. The units you can
select are ° (degrees), ' (minutes), " (seconds),
, (gradians) or
g
4. Choose the units you are converting from.
5. Press [ ENTER ] twice.
• To convert an angle to DMS notation, select " DMS ", which converts an
entry to DMS notations, i.e., where 1
minutes, 0 seconds. See Example 29.
• To convert a DMS notation to decimal, select ° (degrees), ' (minutes),
" (seconds). See Example 30.
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Trigonometric / Inverse-Tri. functions

• SRP-280 / SRP-285 provides standard trigonometric functions and
inverse trigonometric functions - sin, cos, tan, sin
See Example 31.
(Note) : When using those keys, make sure the calculator is set for the
angle unit you want.
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Hyperbolic / Inverse-Hyp. functions

• SRP-280 / SRP-285 uses [ 2nd ] [ HYP ] to calculate the hyperbolic
functions and inverse- hyperbolic functions - sinh, cosh, tanh, sinh
–1 –1
cosh and tanh . See Example 32.
(Note) : When using those keys, make sure the calculator is set for the
angle unit you want.
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Coordinates transformation

• Pressing [ 2nd ] [ R
nates to polar coordinates or vice versa. See Example 33.
Rectangular Coordinates
Y
• P( x, y )
y
X
0
x
(Note) : When using those key, make sure the calculator is set for the angle
unit you want.
DMS (Degree-Minutes-Seconds).
O I
30 0
P ] displays a menu to convert rectangular coordi-
Polar Coordinates
x + y i= r (cos θ + i sin θ)
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(radians)
r
II
represents 1 degrees, 30
–1 –1
, cos and tan
–1
Y
• P( r, θ)
r
θ
0
–1
.
,
X