A new building is being constructed a distance of 420 feet from the ocean, and the builder wants to have a rooftop patio with a view of the ocean. Another building, in between the new building and the ocean, is located a distance of 180 feet from the ocean and has a height of 15 feet. The angle of elevation from the ocean to the top of the new building, θ, represents the minimum angle for a person on the rooftop to view the edge of the ocean.

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