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1. AB and CD are two vertical buildings with their bases A and C on horizontal ground. The height of AB is 30m. The angle of elevation of B as seen from C si 25° and the angle of elevation of D as seen from A is 40°. Draw a diagram for this. Calculate i) The horizontal distance between the buildings, correct to 2 decimal places. ii) The height of CD, correct to 2 significant figures. iii) The angle of depression of B as seen from D.

1. AB and CD are two vertical buildings with their bases A and C on horizontal ground. The height of AB is 30m. The angle of elevation of B as seen from C si 25° and the angle of elevation of D as seen from A is 40°. Draw a diagram for this. Calculate i) The horizontal distance between the buildings, correct to 2 decimal places. ii) The height of CD, correct to 2 significant figures. iii) The angle of depression of B as seen from D.

Elementary Geometry For College Students, 7e
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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AB and CD are two vertical buildings with their bases A and C on horizontal ground. The height of AB is 30m. The angle of elevation of B as seen from C si 25° and the angle of elevation of D as seen from A is 40°. Draw a diagram for this. 1. Calculate i) The horizontal distance between the buildings, correct to 2 decimal places. ii) The height of CD, correct to 2 significant figures. iii) The angle of depression of B as seen from D.
Transcribed Image Text:AB and CD are two vertical buildings with their bases A and C on horizontal ground. The height of AB is 30m. The angle of elevation of B as seen from C si 25° and the angle of elevation of D as seen from A is 40°. Draw a diagram for this. 1. Calculate i) The horizontal distance between the buildings, correct to 2 decimal places. ii) The height of CD, correct to 2 significant figures. iii) The angle of depression of B as seen from D.
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