Final answer:
The question appears to pertain to Mathematics, specifically geometric proofs, but the provided reference information does not correlate with the question asked, making it impossible to provide an accurate response without additional context.
Step-by-step explanation:
The subject of this question falls under the category of Mathematics, specifically within the realm of geometry, proofs, and algebra. When tackling a geometric proof, such as proving perpendicular lines or similar triangles, one often uses deductive reasoning and properties of geometric figures. The equations and expressions provided in the reference material suggest a complex problem that may integrate principles of similar triangles, trigonometric ratios, vector operations, and electrical circuit analysis. However, the provided question does not clearly relate to these concepts, and it seems there has been a misunderstanding or miscommunication in the request. As the reference material does not correspond directly to the question stated, a precise and factually accurate response cannot be formulated without further clarification. For math proof questions, it's important to align the given information with the proof statement to reach a valid conclusion.