Texas Instruments TI-36X Pro User Manual - Page 25
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tan-1 - Z Z1 ) < r cos - 5 V Y g P 4 " ) < r ³ Problem 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: tan A = 7-3 therefore m±A = tan-1 ⎛ ⎝ 7-3 ⎞ ⎠ m±A + m±B + 90¡ = 180¡ A therefore m±B = 90¡ - m±A 3 c c = 32 + 72 C 7 B q < $ $ " " < -ZZ7P3")< 25
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25
³
Problem
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:
tan
-1
-
Z
Z
1
)
<
r
cos
-
5
V
Y
g
P
4
"
)
<
r
tan A =
therefore
m
±
A = tan
-1
m
±
A +
m
±
B + 90
¡
= 180
¡
therefore
m
±
B = 90
¡
-
m
±
A
c =
q
< $
$
"
"
<
-
ZZ
7
P
3
"
)
<
7
3
--
7
3
--
⎠
⎞
⎝
⎛
3
2
7
2
+
c
B
A
3
7
C