Example 23.27 The figure below shows a vertical radio mast. CD and BD are wires supporting the mast, where B and C are on the same horizontal plane as the foot of the mast A, given that BC=12.2m CBD=ZBCD= 68° and %3D ZACD = 40°. D 12.2m 68 Calculate, correct to two significant figures, the (i) length of the wire BD; (ii) height of the mast AD. (ii) |AB|

Example 23.27 The figure below shows a vertical radio mast. CD and BD are wires supporting the mast, where B and C are on the same horizontal plane as the foot of the mast A, given that BC=12.2m CBD=ZBCD= 68° and %3D ZACD = 40°. D 12.2m 68 Calculate, correct to two significant figures, the (i) length of the wire BD; (ii) height of the mast AD. (ii) |AB|

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.CT: Test

Problem 1CT

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Question

Example 23.27
The figure below shows a vertical radio mast.
CD and BD are wires supporting the mast,
where B and Care on the same horizontal plane
as the foot of the mast A, given that
BC 12.2m CBD=ZBCD=68° and
%3D
ZACD = 40°.
12.2m
68°
B
Calculate, correct to two significant figures, the
(i) length of the wire BD;
(ii) height of the mast AD.
(iii) |AB|

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