2.3\„¸45`‚¹

Three trigonometric functions are readily available in the keyboard:

sine (

), cosine (

), and tangent (

). Arguments of these

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

following examples use angles in degrees (DEG):

In ALG mode:

 

 

T45S0`

In RPN mode:

45T30S

The inverse trigonometric functions available in the keyboard are the

arcsine (

), arccosine (

), and arctangent (

).

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

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

 

In ALG mode:

T

 

 

S

 

 

 

„.5`

 

In RPN mode:

 

 

 

 

0

 

 

 

.5„

 

 

U135`

 

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 Equation135UWriter, whose operations is described in

Chapter 2, is ideal„¼for building13Àsuch¼0¾8À13expressions,„¾2¼8¾+2-regardless*/of the„Àcalculator operation mode.

Page 3-5

Page 58
Image 58
HP 49g manual „¸45`‚¹, RPN mode