Mathematics, 16.04.2020 20:23 JSTAX01
A rectangular billboard 8 feet in height stands in a filed so that its bottom is 11 feet above the ground. A nearsighted cow with eye level at 4 feet above the ground stands x feet from the billboard. Express θ , the vertical angle subtended by the billboard at her eye, in terms of x. Then find the distance x0 the cow must stand from the billboard to maximize θ .
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