HP 9g Graphing Trigonometric and Inverse Trigonometric functions, Coordinate Transformations

To change the angular unit setting to another setting, press

[ DRG ] repeatedly until the angular unit you want is indicated on the display.

The conversion procedure follows (also see Example 25):

1.Change the angle units to the units you want to convert to.

2.Enter the value of the unit to convert.

3.Press [ 2nd ] [ DMS ] to display the menu. The units you can select are

°(degrees), ’ (minutes), ” (seconds), r (radians), g (gradians) or DMS (Degrees-Minutes-Seconds).

4.Select the units you are converting from.

5.Press [] twice.

To convert an angle to DMS notation, select DMS. An example of DMS notation is 1° 30’ 0” (= 1 degrees, 30 minutes, 0 seconds). See Example 26.

To convert from DMS notation to decimal notation, select °(degrees), ’(minutes), ”(seconds). See Example 27.

Trigonometric and Inverse Trigonometric functions

The calculator provides standard trigonometric functions and inverse trigonometric functions: sin, cos, tan, sin-1, cos-1and tan-1. See Example 28.

Note: Before undertaking a trigonometric or inverse trigonometric calculation, make sure that the appropriate angular unit is set.

Hyperbolic and Inverse Hyperbolic functions

The [ 2nd ] [ HYP ] keys are used to initiate hyperbolic and inverse hyperbolic calculations using sinh, cosh, tanh, sinh-1, cosh-1and tanh-1. See Example 29.

Note: Before undertaking a hyperbolic or inverse hyperbolic calculation, make sure that the appropriate angular unit is set.

Coordinate Transformations

Press [ 2nd ] [ RP ] to display a menu to convert rectangular coordinates to polar coordinates or vice versa. See Example 30.

Note: Before undertaking a coordinate transformation, make sure that the appropriate angular unit is set.

Mathematical Functions

E-16