Radio Shack TRS-80 PC-3 Owner's Manual page 182

1
TAN
numeric expression
TAN is a numeric function which returns the tangent of its angle argument. The value returned depends on whether the PC-3
Computer is in decimal degree, radian, or gradient mode for angles. TAN 45 is 1.
(CALCULATION RANGE)
Functions Dynamic range
-1 x 10
100
<x log
Y
< 100
(Y
~O, x~O:
ERROR 2)
(Ex.)
IV'i;J
I
ENTER
1-+
ERROR 2
(yx)
y~O,x>O:O
i;J '" 5
[ENTER 1-+
i;J.
y"'x
(-4)"'i;J.5 IENTERj-+ ERROR 2
If
Y
<
0
x
must be an integer.
In TAN x, however, the
SIN x DEG: Ixl<lxl0
1O
following cases are excluded.
DEG: I x I
~
90 (2n - 1)
COSx RAD: Ixl<...!!- xl0
10
RAD: Ix I
~
; (2n-l)
180
TANx
GRAD: Ix I < JQ
X
10
10
GRAD: I x I
~
100 (2n-1)
9
(n: integer)
182
Functions
Dynamic range
SIW
1
x
-1
00:::
x
00:::
1
COS-
1
X
TAN-Ix
I x I < 1
X
10
100
LNx
1 x 10-
99
00:::
x < 1
X
10
100
LOGx
EXPx
-1 xl 0
100
<
X
00:::
230.2585092
-IX
o
00:::
x < 1
X
10
100