Our coordinate axes will be as shown in the figures

# Our coordinate axes will be as shown in the figures - γ =...

This preview shows page 1. Sign up to view the full content.

Our coordinate axes will be as shown in the figures, with the origin at A, with the x axis parallel to the baseline and directed to the right, the y axis vertical and directed upwards, and the z axis perpendicular to the x and y axes, and directed towards the building. A simple translation of axes will later place the origin at any selected point, such as a corner of the building, and a rotation of axes can adjust the base line to be parallel to any selected line. We now calculate the x coordinate of point P.
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: γ = 180 - α- β a = c sin α / sin γ b = c sin β / sin γ Figure: Plan View From the plan view we see that cos ( α- ε ) = x / b x = b cos ( α- ε ) Next we find the y coordinate of point P. From position A: tan θ = y / b From position B: y = b tan θ tan φ = ( y + ∆ ) / a y = a tan φ- ∆ As mentioned, the values of y found from each setup position are independent. Next we find the z coordinate of point P. sin ( α- ε ) = z / b From which, z = b sin ( α- ε )...
View Full Document

## This note was uploaded on 11/05/2011 for the course ARH ARH2000 taught by Professor Karenroberts during the Fall '10 term at Broward College.

Ask a homework question - tutors are online