Section 3: Numeric Functions 35
Radians Mode. Pressing ´R selects the
Radians trigonometric mode. While Radians mode is
set, the RAD annunciator appears in the display.
Grads Mode. Pressing ´ g selects the Grads
trigonometric mode. When Grads mode is set, the
GRAD annunciator appears in the display.
The calculator is always set to one of the three trigonometric modes.
Continuous Memory maintains the last mode selected, even when the calculator
is turned off and on again. If Continuous Memory is reset (refer to page 18), the
calculator will automatically reset to Degrees mode.
Trigonometric Functions
To use any of the trigonometric functions, ensure that the calculator is set to the
desired trigonometric mode (Degree, Radian, or Grad), then execute the desired
function.
Time and Angle Conversions
Numbers representing time or angles are interpreted by the HP-10C in a decimal
or minutes-seconds format, depending upon the conversion being executed:
Hours (or Degrees)-Minutes-Seconds Conversion. Pressing ´h
converts the number in the display (X-register) from a decimal hours (or
decimal degrees) format to an hours (or degrees)-minutes-seconds-decimal
seconds format.
For example, press ´h to convert
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