- ReciprocalComputes the reciprocal of the number currently displayed.
- Square RootComputes the square root of the number currently displayed.
- SquareComputes the square of the number currently displayed.
- Logarithm to base 10Computes the logarithm to base 10 of the number currently displayed.
- Natural LogarithmComputes the natural logarithm (logarithm to base e) of the number currently displayed.
- X to the Power of aComputes X to the power of a.
Calculate 5 raised to the power of 6.
- ath Root of XComputes the ath root of X (i.e. X to the power of the reciprocal of a).
Calculate the cube root of two:
- Input Degrees/Hours, Minutes, Seconds (Sexagesimal)The deg or hour button is used to enter an angle/time in degrees/hours, minutes and seconds in one of the sexagesimal modes (i.e. Angle or Time). The button appears where the rand button appears in Decimal modes.
To enter a number in sexagesimal format, first enter the number of whole degrees or hours, and press degree or hour. The legend changes to minute to indicate that the next number input is the number of minutes. Enter the number of minutes and press minute. The legend changes again, this time to second. Enter the number of seconds.
Arithmetic calculations can be carried out in Angle or Time mode, or the result or number entered can be converted to another format by selecting a different calculator mode. Similarly a Decimal (or other base) number can be converted to sexagesimal format by selecting the Angle or Time mode.
Note that selecting Time or Angle mode automatically selects appropriate properties and units for conversion.
What is the sine of 17 degrees, 14 minutes and 30 seconds?
First click on , select Angle mode in the mode dialog box (or Alt Shift A).
1 7 o 1 4 ' 3 0 "
Result: 17° 14' 30"
to change to Decimal mode or use the Options/Mode
page (or Alt Shift D):
I started work at 08:30 and finished at 18:54, and I took a 45 minute lunch break. How many hours do I put on my time sheet?
First click or select Time mode in the Options/Mode page (or Alt Shift T).
1 8 hr 5 4 ' - 8 hr 3 0 ' - hr 4 5 ' =
Result: 9h 39' 0"
To continue the calculation to accumulate hours for a weekly time sheet, use the m+ button. To convert to a decimal number of hours, select Decimal mode (or Alt Shift D).
- Random NumberGenerates a pseudo-random number between 0 and 1.
- HyperbolicThis button is used to select hyperbolic functions and inverse hyperbolic functions. Clicking the hyp button causes the legends of the sin, cos and tan to change to sinh, cosh and tanh.
Pressing shift either before or after the hyp causes the inverse hyperbolic functions to be displayed: asinh, acosh and atanh.
Compute the hyperbolic sin of 1.0
1 hyp sinh
- SineComputes the sine of an angle.
- Inverse SineComputes the arc sine, i.e. the angle for which the sine is the value entered.
- CosineComputes the cosine of an angle.
- Inverse CosineComputes the angle for which the cosine is the value entered.
- TangentComputes the tangent of an angle.
- Inverse TangentComputes the angle for which the tangent is the value entered.
- FactorialComputes the factorial of a current number. If the current number displayed is not an integer, the result is the factorial of the integer value of the current number.
- PiEnters the value of pi, the ratio of the circumference of a circle to it's diameter, in the display.
- Inverse LogarithmComputes 10 raised to the power of the current number, giving the inverse logarithm.
- Inverse Natural LogarithmComputes the value of e raised to the power of the current number (exponential function or inverse of natural logarithm).
- SignChanges the sign of the number currently displayed.
- BackspaceUse this button to remove the most recently entered numbers, digit by digit.
To remove the whole of an entry, use (Clear entry).
To force the calculator to evaluate a particular expression first, use parentheses (brackets). Evaluating 1 + (2 X 3) always gives the result 7. The current level of parentheses is shown in the button legend.