User's Manual

© 1999 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-30X ÙS: A Guide For Teachers
85
Inverse Cosine
%

Use this formula to find the angle of
the ski jump. Round your answer to
the nearest tenth, and then return
to floating decimal mode.
COS x = 453/500
Press Display
%

453 W
500 E <
cos
-1
(453/50
¹
25.04169519
DEG
%
©
" "
F 0 1 2 3 4 5 6 7 8 9
-
DEG
<
cos
-1
(453/50
¹
'
25.0
FIX DEG
%
©
8
cos
-1
(453/50
¹
'
25.04169519
DEG