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92
Function Keys
Example: Find the percent of increase of your rent 10 years ago
($70 per month) to today ($240 per month).
Press
Display
70
240 )
242.86
Percent increase.
The formula used is:wg = 9%CH.
y
Trigonometric Functions
Your HP-67 provides you with six trigonometric functions, which
operate in decimal degrees, radians, or grads. You can easily convert
angles from decimal degrees to radians or vice versa, and you can
convert between decimal degrees, and degrees, minutes, seconds.
You can also add angles specified in degrees, minutes, seconds
directly, without converting them to decimal.
Degrees/Radians Conversions
The
and
functionsare used to convert angles between degrees
and radians. To convert an angle specified in degrees to radians,
key in the angle and press B} (FA. For example, to change 45°
to radians:
Press
Display
45
45.
e
Radians.
To convert an angle specified in radians to decimal degrees, key
in the angle and press (" 3. For example, to convert 4 radians to
decimal degrees:
Press
Display
4
o
Decimal degrees.
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