Texas Instruments TI-34 - MultiView Scientific Calculator User Manual page 26

-1
Tan
Cos
Example Radian mode
Tan
-1
Tan
Cos
Problem
³
Find angle A of the right triangle below. Then calculate angle
B and the length of the hypotenuse c. Lengths are in meters.
Round results to one decimal place.
Reminder:
7
tan A = -- - therefore m
3
m A + m
± ±
therefore m
±
2
c = 3 + 7
%B 6
1 E <
5 V %B 2
60 E <
q " < -
%B 3 g P 4 " E
<
%B 6
1 E <
r
5 V %B 2 g P 4
" E <
±
B + 90Ä = 180Ä
B = 90Ä - m
2
7
⎛ ⎞
-1
-- -
A = tan
⎝ ⎠
3
A
A
±
3
C
c
B
7
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