61
Copyright © Lexibook 007
ENGLISH
Arccosine, arcsine, arctangent
[SHIFT] [cos
-1
]
[SHIFT] [sin
-1
]
[SHIFT] [tan
-1
]
arccos(x)
arcsin(x)
arctan(x)
For the sin
-1
, tan
-1
et cos
-1
functions, the results of the angle measurements
will be provided in the following intervals:
DEG
RAD
GRAD
= sin
-1
x, = tan
-1
x
= cos
-1
x
-90≤ ≤90
0≤ ≤180
0≤ ≤
π
π
- ≤ ≤
π
-100≤ ≤100
0≤ ≤200
E.g.:
[MODE] [MODE] [MODE] 3
[SHIFT] [tan
-1
] 1 [=]
-> tan
-1
1
| 50.
A road sign indicates that there is a 5% slope. What is the angle measure-
ment in degrees and radians?
If the slope has an altitude of 5% it thus increases by 5m every 100m. The
sinus of the angle to find is 5 divided by 100, thus 0,05.
[MODE] [MODE] [MODE] 1
[SHIFT] [sin
-1
] [.] 0 5 [=]
-> sin
-1
.05 | 2.865983983
D
[MODE][MODE][MODE] 2 -> sin
-1
.05 | 2.865983983
R
[SHIFT] [DRG ] 1 [=]
-> Ans
o
| 0.050020856 radians
Polar Coordinates
[Pol(]
[SHIFT] [Rec(]
[,]
[)]
[ALPHA] [E]
[ALPHA] [F]
Initiates the input of Cartesian coordinates for
conversion into polar coordinates.
Initiates the input of polar coordinates for conversion
into Cartesian coordinates.
Used with [Pol(] or [SHIFT] [Rec(], it is placed between
x and y, or r and
0 to indicate the input of the
ème
coordinate.
Brackets ending the input of the pair of coordinates.
Displays the first coordinate after conversion, x or r.
Displays the second coordinate after conversion, y or
0
.
Initiates the input of Cartesian coordinates for
conversion into polar coordinates.
0
0
0
0
0
0
0
0
0
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