This preview shows page 1. Sign up to view the full content.
2.
Sample answer: An angle of elevation is called
that because the angle formed by a horizontal line
and a segment joining two endpoints rises above
the horizontal line.
3.
The angle of depression is
/
FPB
and the angle of
elevation is
/
TBP
.
4.
AC
is 50 miles or 50(5280)
5
264,000 feet.
Let
x
represent
m
/
CAB
.
tan
x
°
¬
5
}
C
AC
B
}
tan
x
°
¬
5
}
2
1
6
0
4
,0
,0
0
0
0
0
}
x
¬
5
tan
2
1
1
}
2
1
6
0
4
,0
,0
0
0
0
0
}
2
x
¬
<
2.2
The angle of elevation should be about 2.2°.
5.
Let
x
represent
m
/
ACB
.
tan
x
°
¬
5
}
B
AB
C
}
tan
x
°
¬
5
}
1
7
8
.6
.2
}
x
¬
5
tan
2
1
1
}
1
7
8
.6
.2
}
2
x
¬
<
22.7
The angle of elevation is 22.7°.
6.
The angle of depression between the ship and the
horizontal is 13.25°. Find the length along the
ocean floor.
The ocean floor and the horizontal level with the
ship are parallel, creating congruent alternate
interior angles
/
BAC
and
/
ACD
.
tan13.25°
¬
5
}
D
40
C
}
DC
tan13.25°
¬
5
40
DC
¬
5
}
tan1
4
3
0
.25°
}
DC
¬
<
169.9
The diver must walk about 169.9 meters along
This is the end of the preview. Sign up
to
access the rest of the document.
 Fall '10
 Dr.Zhan
 Calculus, PreCalculus

Click to edit the document details