\"\"

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The function is \"f.

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\"fraction                       (Apply derivative)

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\"f                          (The trigonometric of \"fraction)\"\"

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To find the slope at \"left,

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Evaluate \"f  (Slope of the graph at \"left)

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\"f           (Simplify)

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\"\"

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Then, using the point-slope form of the equation is:

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\"y                              (Point-slope form)

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\"y                         (Substitute \"y)

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\"y                   (Apply distributive property: a(b + c) = ab + ac)

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\"y                      (Simplify)

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\"y                            (Add 2 to each side)

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\"\"

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Therefore the equation of the tangent lint at \"left is \"y.

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Use a graphing utility to graph the function and its tangent line at the point:

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\"\"