What should be the height of a flagpole where a 20 feet long ladder reaches 20 feet below the top of the flagpole (The angle of elevation of the top of the flagpole at the foot of the ladder is 60°.)?
What should be the height of a flagpole where a 20 feet long ladder reaches 20 feet below the top of the flagpole (The angle of elevation of the top of the flagpole at the foot of the ladder is 60°.)?
Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter7: Triangles
Section7.1: The Law Of Sines
Problem 52PS: Gina is standing near a building and notices that the angle of elevation to the top of the building...
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Question
![What should be the height of a flagpole where a 20 feet long ladder
reaches 20 feet below the top of the flagpole (The angle of elevation of
the top of the flagpole at the foot of the ladder is 60°.)?
20 feet
30 feet
А.
В.
40 feet
20v2 feet
C.
D.
Given a triangle ABC, which among the following shows the Laws of
Cosine?
i. (AC)? = (AB) +(BC)? - 4(AB) (BC) cos A
ii. (BC) = (AB)² + (AC)? - 4(AB) (AC) cos B
(BC)2+(AC)-(AB)
%3D
%3D
iii. cos C =
(AC)(BC)
OA.i and ii
B. ii and iii
C. i and iii
D. i, il, and ii](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe070cbb2-9c9a-472a-a1eb-bb8457d5c77e%2F60d98460-a7fe-4e85-b15d-1be42f83c441%2F3nlbbg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:What should be the height of a flagpole where a 20 feet long ladder
reaches 20 feet below the top of the flagpole (The angle of elevation of
the top of the flagpole at the foot of the ladder is 60°.)?
20 feet
30 feet
А.
В.
40 feet
20v2 feet
C.
D.
Given a triangle ABC, which among the following shows the Laws of
Cosine?
i. (AC)? = (AB) +(BC)? - 4(AB) (BC) cos A
ii. (BC) = (AB)² + (AC)? - 4(AB) (AC) cos B
(BC)2+(AC)-(AB)
%3D
%3D
iii. cos C =
(AC)(BC)
OA.i and ii
B. ii and iii
C. i and iii
D. i, il, and ii
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