Find the slope and concavity for the curve whose equation is \(x = 2 + \sec \theta, y = 1 + 2 \tan \theta\) at \(\theta = \frac{\pi}{6}\).
parametric-equationsderivativesslopeconcavitysecond-derivativetrigonometric-functionschain-rulecalculus-iievaluate-derivativefind-concavitysecanttangent
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