Angle Measure; Coordinate System - HP 50g User Manual

Angle Measure

Trigonometric functions, for example, require arguments representing plane
angles. The calculator provides three different Angle Measure modes for
working with angles, namely:
• Degrees: There are 360 degrees (360 ) in a complete circumference.
• Radians: There are 2
• Grades: There are 400 grades (400
The angle measure affects the trig functions like SIN, COS, TAN and
associated functions.
To change the angle measure mode, use the following procedure:
• Press the H button. Next, use the down arrow key, ˜, twice.
Select the Angle Measure mode by either using the \ key (second
from left in the fifth row from the keyboard bottom), or pressing the
@CHOOS soft menu key. If using the latter approach, use up and down
arrow keys, —˜, to select the preferred mode, and press the !!@@OK#@
soft menu key to complete the operation. For example, in the following
screen, the Radians mode is selected:

Coordinate System

The coordinate system selection affects the way vectors and complex
numbers are displayed and entered. To learn more about complex
numbers and vectors, see Chapters 4 and 8, respectively, in this guide.
There are three coordinate systems available in the calculator: Rectangular
(RECT), Cylindrical (CYLIN), and Spherical (SPHERE).
coordinate system:
• Press the H button. Next, use the down arrow key, ˜, three times.
Select the Coord System mode by either using the \ key (second
from left in the fifth row from the keyboard bottom), or pressing the
@CHOOS soft menu key. If using the latter approach, use up and down
arrow keys, —˜, to select the preferred mode, and press the !!@@OK#@
r
radians (2 ) in a complete circumference.
g
) in a complete circumference.
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