\"\"

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From the diagram, the tangent value is \"\"

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\"\"

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\"\"                  (Substitute x for opposite side, 15 for adjacent side)

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\"\"                  (Use a calculator to find tangent value)

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\"\" (Multiply by 15 to each side)

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\"\"              (Cancel common terms)

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\"\"                        (Multiply: \"\")

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\"\"                                (Rounded to nearest foot)

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\"\"

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The value of x is 9.