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A rain gutter is to be constructed of aluminum sheets 12 inches wide. After marking off a length of 4 inches from each edge, this
A rain gutter is to be constructed of aluminum sheets 12 inches wide. After marking off a length of 4 inches from each edge, this length is bent up at an angle . The area A of the opening may be expressed as the function: A() = 16 sin (cos + 1). If = 60, what is the area of the opening?
1.2 in2
7.9 in2
16.3 in2
20.8 in2
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