The discussion centers on finding the tension in member CD, which is given as 4.22 kN. The calculations involve using the arctangent function and Pythagorean theorem, resulting in a derived tension of 21 kN for CD. However, there is confusion regarding the clarity of the diagram and the positioning of points A and B, leading to uncertainty about the existence of tension in member CD and the ability to calculate tensions in members AD and BD. Participants express a need for a clearer verbal description or coordinates for the points in the diagram to facilitate understanding. Overall, the lack of clarity in the diagram is a significant barrier to solving the problem effectively.
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