Trigonometric And Hyperbolic Functions And Modes - HP 10bII+ User Manual

Trigonometric and Hyperbolic Functions and Modes

Selecting Angle Format
The trigonometric angle format determines how numbers are interpreted when using
trigonometry functions. The default format for angles on the 10bII+ is degrees. To change to
radians mode, press
displayed.
Trigonometric Functions
Example
Perform the following trigonometric calculations. If RAD is lit in the display, press
Table 2-16 Example using various trigonometric calculations
Keys
\5Y
JV]c
J1S:]C
4
7DV]oR
]3
. When radians mode is active, the RAD annunciator is
Table 2-15 Trigonometric functions
Keys
]c
]R
]C
]oc
]oR
]oC
Description
Calculates sine, written as sin.
Calculates cosine, written as
cos.
Calculates tangent, written as
tan.
Calculates inverse sine, also
written, arcsin, asin, or sin
Calculates inverse cosine, also
written, arccos, acos, or cos
Calculates inverse tangent, also
written, arctan, atan, or tan
Display Description
0.0000 Set display to four decimal places.
0.2588
Displays sine of 15
1.7321
Displays tangent of 60
2.7321
Calculates 1 + tangent of 60
69.5127 Displays inverse cosine of 0.35.
- 1
.
- 1
.
- 1
.
]3
o
.
o
.
o
.
Getting Started
35
.