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Holt Mcdougal Larson Pre-algebra: Student Edition 2012

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter6: Ratio, Proportion, And Probability

Section6.5: Similarity And Measurement

Problem 2E

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Question

It is decided to estimate the height of a cell tower (called P). You performed trigonometric leveling from 3 stations: A, B & C, using slope distances
and vertical angles. Compute the height of the top of the cell tower from point A. The survey data is
i. SAP 678.56; αAP = 5030'00"
ii. SBP = 555.31; app = 3010'00"
iii. Scp 900.31; acp=2045'00"
iv. Elevations of stations above the MSL datum
1. HA 253.31'; HB 287.64'; HC-275.11'

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It is decided to estimate the height of a cell tower (called P). You performed trigonometric leveling from 3 stations: A, B & C, using slope distances and vertical angles. Compute the height of the top of the cell tower from point A. The survey data is i. SAP = 678.56; αAP = 5o30’00” ii. SBP = 555.31; αBP = 3o10’00” iii. SCP = 900.31; αCP = 2o45’00” iv. Elevations of stations above the MSL datum 1. HA = 253.31’; HB = 287.64’; HC = 275.11’
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