HP 48gII Manuel d'utilisateur télécharger pdf (Page 58)

Page 3-5

2.45` ‚¹

2.3\` „¸

• Three trigonometric functions are readily available in the keyboard:

sine (S), cosine (T), and tangent (U). Arguments of these

functions are angles in either degrees, radians, grades. The

following examples use angles in degrees (DEG):

In ALG mode:

S30`

T45`

U135`

In RPN mode:

30S

45T

135U

• The inverse trigonometric functions available in the keyboard are the

arcsine (

„¼

), arccosine (

„¾

), and arctangent (

„À

The answer from these functions will be given in the selected angular

measure (DEG, RAD, GRD). Some examples are shown next:

In ALG mode:

„¼0.25`

„¾0.85`

„À1.35`

In RPN mode:

0.25„¼

0.85„¾

1.35„À

All the functions described above, namely, ABS, ABS, SQ, √, ^, XROOT,

LOG, ALOG, LN, EXP, SIN, COS, TAN, ASIN, ACOS, ATAN, can be

combined with the fundamental operations (+-*/) to form more

complex expressions. The Equation Writer, whose operations is described in

Chapter 2, is ideal for building such expressions, regardless of the calculator

operation mode.

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HP 48gII Manuel d'utilisateur Page 58