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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, 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.
SG49A.book Page 4 Friday, September 16, 2005 1:31 PM