12. A ship's chief navigator is plotting the course for a tour of three islands. The first island is 12 miles due west of the second island. The third island is 18 miles due south of the second island. a) Do you have enough information to determine First island W N S 12 mi. E Simas Second island 18 mi. Third island the bearing required to sail directly back from the third island to the first island? Explain. b) If your answer to part a is yes, describe how the navigator would determine the bearing.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter7: Locus And Concurrence
Section7.2: Concurrence Of Lines
Problem 42E: There are plans to locate a disaster response agency in an area that is prone to tornadic activity....
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angle of
ination
asures an
gle above the
izontal. An
le of
ression
asures an
le below the
zontal.
12. A ship's chief navigator is
plotting the course for a tour
of three islands. The first island
is 12 miles due west of the
second island. The third island
is 18 miles due south of the
second island.
a) Do you have enough
information to determine
First
island
W
N
S
12 mi.
E
b) Determine the measure of LA.
Is LA an angle of inclination or
an angle of depression? Why?
c) Describe another method to solve part b.
Which method do you prefer? Why?
Second
island
18 mi.
Third
island
the bearing required to sail
directly back from the third island to the first island? Explain.
b) If your answer to part a is yes, describe how the navigator would
determine the bearing.
13. Assessment Focus A carpenter is building a bookshelf against the sloped
ceiling of an attic.
a) Determine the length of the sloped ceiling, AB,
used to build the bookshelf.
sloped ceiling
BURS
3.24 m
B
SALEEY
1.1 Trigonometric Ratios in Right Triangles
2.35 m
с
11
Transcribed Image Text:angle of ination asures an gle above the izontal. An le of ression asures an le below the zontal. 12. A ship's chief navigator is plotting the course for a tour of three islands. The first island is 12 miles due west of the second island. The third island is 18 miles due south of the second island. a) Do you have enough information to determine First island W N S 12 mi. E b) Determine the measure of LA. Is LA an angle of inclination or an angle of depression? Why? c) Describe another method to solve part b. Which method do you prefer? Why? Second island 18 mi. Third island the bearing required to sail directly back from the third island to the first island? Explain. b) If your answer to part a is yes, describe how the navigator would determine the bearing. 13. Assessment Focus A carpenter is building a bookshelf against the sloped ceiling of an attic. a) Determine the length of the sloped ceiling, AB, used to build the bookshelf. sloped ceiling BURS 3.24 m B SALEEY 1.1 Trigonometric Ratios in Right Triangles 2.35 m с 11
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