Texas Instruments TI-30XIIS Teachers Guide - Page 92
Inverse Cosine
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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 %ž Press Display ž % 453W cos-1 (453/50 & ' 500 E < 25.04169519 DEG %© " " F 0 -1 2 3 4 5 6 7 8 9 DEG < cos-1 (453/50 & ' 25.0 DEG %© 8 cos-1 (453/50 & ' 25.04169519 DEG © 1999 TEXAS INSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers 85
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© 1999 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-30X
Ù
S: A Guide for Teachers
85
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
cos
-1
-1
(453/50
(453/50
&
'
25.04169519
25.04169519
DEG
%
©
"
"
F 0 1 2 3 4 5 6 7 8 9
F 0 1 2 3 4 5 6 7 8 9
-
DEG
<
cos
cos
-1
-1
(453/50
(453/50
&
'
25.0
25.0
DEG
%
©
8
cos
cos
-1
-1
(453/50
(453/50
&
'
25.04169519
25.04169519
DEG
Inverse Cosine