Question 4 - Exponential, Logarithmic, Trigonometric & Hyperbolic Functions (c) A building site has the shape of an irregular quadrilateral as shown in the diagram
below (not drawn to scale). It has been decided to enclose the whole site by
building a wall around it, and divide the site into two plots by building a wall from B
to D.
152 m
-
740
390
449
138 m
Using trigonometric methods, determine the total length of the wall that needs to be
constructed, giving your final answer to 3 significant figures.