Ope COSyp Cos ed HyP 167 Tan d SinFyP OPp 6. A baseball player is standing in left field and is 360 feet away from home plate. A helicopter ies over his head and is at an altitude of 763 feet when it passes directly over him. What is the angle of elevation from home plate to the helicopter? 763

Elementary Geometry for College Students
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Chapter8: Areas Of Polygons And Circles
Section8.CR: Review Exercises
Problem 40CR
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4NOK NOT FOR IND
OPp
Opp COSyP
ad
Tan adj Sin
FiyP
6. A baseball player is standing in left field and is 360 feet away from home plate. A helicopter
fies over his head and is at an altitude of 763 feet when it passes directly over him. What is the
angle of elevation from home plate to the helicopter?
763
360
7. To the nearest 0.01 degree, what angle of descent (angle of depression) must a plane 50
horizontal miles from the airport and at an altitude of 20,000 feet make for its final approach?
5280
So mi-
264,000
50
8. A boat is caught in a storm at Point A. It is sending a distress signal to two Coast Guard
stations, at Points B and C, that are 50 miles apart on land. If m<ABC = 36 degrees and m<BAC
= 54 degrees, find the station closest to the boat. About how far must rescue boats from each
station travel to reach the distressed boat?
9. A mountain has a base and peak that are inaccessible. At point A, the angle of elevation of
the peak is 30º. One kilometer closer to the mountain, at point C, the angle of elevation is 35°.
Find the height of the mountain.
tan30= Tkm
tan 35-
30°
35
A
1 km C
B.
Transcribed Image Text:4NOK NOT FOR IND OPp Opp COSyP ad Tan adj Sin FiyP 6. A baseball player is standing in left field and is 360 feet away from home plate. A helicopter fies over his head and is at an altitude of 763 feet when it passes directly over him. What is the angle of elevation from home plate to the helicopter? 763 360 7. To the nearest 0.01 degree, what angle of descent (angle of depression) must a plane 50 horizontal miles from the airport and at an altitude of 20,000 feet make for its final approach? 5280 So mi- 264,000 50 8. A boat is caught in a storm at Point A. It is sending a distress signal to two Coast Guard stations, at Points B and C, that are 50 miles apart on land. If m<ABC = 36 degrees and m<BAC = 54 degrees, find the station closest to the boat. About how far must rescue boats from each station travel to reach the distressed boat? 9. A mountain has a base and peak that are inaccessible. At point A, the angle of elevation of the peak is 30º. One kilometer closer to the mountain, at point C, the angle of elevation is 35°. Find the height of the mountain. tan30= Tkm tan 35- 30° 35 A 1 km C B.
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