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Three trigonometric functions are readily available in the keyboard:
sine (
) , cosine (
S
functions are angles in either degrees, radians, grades. The
following examples use angles in degrees (DEG):
In ALG mode:
In RPN mode:
The inverse trigonometric functions available in the keyboard are the
arcsine (
„ ¼
The answer from these functions will be given in the selected angular
measure (DEG, RAD, GRD). Some examples are shown next:
In ALG mode:
In RPN mode:
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 (
complex expressions. The Equation Writer, whose operations is described in
Chapter 2, is ideal for building such expressions, regardless of the calculator
operation mode.
2 . 4 5 ` ‚ ¹
2 . 3 \ ` „ ¸
) , and tangent (
T
U
S 3 0 `
T 4 5 `
U 1 3 5 `
3 0 S
4 5 T
1 3 5 U
) , arccosine (
) , and arctangent (
„ ¾
„ ¼ 0 . 2 5 `
„ ¾ 0 . 8 5 `
„ À 1 . 3 5 `
0 . 2 5 „ ¼
0 . 8 5 „ ¾
1 . 3 5 „ À
+ - * /
) . Arguments of these
) .
„ À
) to form more
Page 3-5

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