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Setting The Angular Mode; Trigonometric Functions - HP 35s User Manual

Scientific calculator.
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Setting the Angular Mode

The angular mode specifies which unit of measure to assume for angles used in
trigonometric functions. The mode does not convert numbers already present (see
"Conversion Functions" later in this chapter).
360 degrees = 2 radians = 400 grads
To set an angular mode, press
can select an option.
Option




Trigonometric Functions

With x in the display:
Sine of x.
Cosine of x.
Tangent of x.
Arc sine of x.
Arc cosine of x.
Arc tangent of x.
Calculations with the irrational number
Note
exactly by the 15–digit internal precision of the calculator. This is
particularly noticeable in trigonometry. For example, the
calculated sin
small number close to zero.
4-4
Real–Number Functions
9
Description
Sets degree mode, which uses decimal
degrees rather than hexagesimal degrees
(degrees, minutes, seconds)
Sets radian mode
Sets gradient mode
To Calculate:
(radians) is not zero but –2.0676
. A menu will be displayed from which you
 
 
 
Annunciator
none
RAD
GRAD
Press:
cannot be expressed
–13
10
, a very

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