HP 9100A - SCIENTIFIC FUNCTION KEYS

1
~'- ~ ~ ~ , r:;>J~~~ ·j'
"'- " . I '·'•·
FUN TON' K YS
Select~, the entry and dtsplay un1ts for the trigonometnc
functtons. To convert from DEGREES (RADIANS) to RADIANS
(DEGRE:ES):
1) SET: DEGREES (RADIANS)
2) E NTER: DEGREES (RADIANS)
3) PRESS: sin x , cos x, tan x
4) SET: RADIANS (DEGREES)
5) PRESS: a~c sin x, cos x. or tan x; answer in RADIANS
(DEGREES) 1s entered mto the X reg1ster.
Inverse~ tngonometnc functtons are calculated for the prin-
ctpal value
of the function.
9 Stn-
1
X; -90 _8 t 90; (- 7T 2<8 <-r 7T 2)
9
COS
1
x; 0 ~ 9 -t 180 ; (0 ~ 9 < TT)
e tan
1
x; - 90 <e +90 ; (- 7Tf2 ~ e <+ "o/2)
EXAMPLE
sm +135°. +.7071; sm-
1
+.7071- +45.
0
Rep~aces the contents of the X register with the Sine of the
contents of X.
Replaces the contents of the X regtster wtth the Cosine of
the contents of X.
Replaces the contents of the X register with the Tangent of
the contents of X.
Prefix used to calculate the tnverse trigonometric and hy-
perboltc
functtons. The answer ts entered into the X regis-
ter.
Prefix used
to calculate the hyperbolic (sinh, cosh, and
tanh) functtons. The answer is entered into the X register.
EXAMP'LE: sinh -
1
2 = 1. 4436
CORRECT
INCORRECT
2
arc hyper sin .r
.... ... "
2
hyper arc sin .r
" "
.
12
~ ERROR
sm- ~ LIGHT