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• Grades: There are 400 grades (400
g
) in a complete circumference.
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 ( B). If using the latter approach, use up and down arrow
keys,— ˜, to select the preferred mode, and press the !!@@OK#@ (F)
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). To change 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 ( B). If using the latter approach, use up and down arrow
keys,— ˜, to select the preferred mode, and press the !!@@OK#@ ( F)
soft menu key to complete the operation. For example, in the following
screen, the Polar coordinate mode is selected: