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What is the area of the opening

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Reference no: EM131107891

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 θ.

The area A of the opening may be expressed as the function: A(θ) = 16 sin θ ⋅ (cos θ + 1). If θ = 90°, what is the area of the opening?

Reference no: EM131107891

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