© 1999
T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-30X ÙS: A Guide For Teachers
82
Tangent
@
Use this formula to find the
distance from the lighthouse to the
boat. Round your answer to the
nearest whole number, and then
return to floating decimal mode.
Press Display
78 W @
27 E <
78/tan (27)
'
153.0836194
DEG
%
©
"
F 0 1 2 3 4 5 6 7 8 9
-
DEG
<
78/tan (27)
'
153.
FIX DEG
%
©
8
78/tan (27)
'
153.0836194
DEG
D = 78/TAN 27
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