How do you find an equation of the tangent line to the curve at the given point if ##y = sec (x) – 2 cos (x)## and ##p=(pi/3, 1)##?

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How do you invent an equation of the tangent cord to the deflexion at the ardent purpose if ##y = sec (x) - 2 cos (x)## and ##p=(pi/3, 1)##?
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