See [derivativesOfPolarFunctions/exercises/verticalAndHorizontalTangentLinesToPolarCurves1.tex](https://github.com/mooculus/calculus/blob/master/derivativesOfPolarFunctions/exercises/verticalAndHorizontalTangentLinesToPolarCurves1.tex) Some angles are missing here for both horizontal and vertical.
See derivativesOfPolarFunctions/exercises/verticalAndHorizontalTangentLinesToPolarCurves1.tex
Some angles are missing here for both horizontal and vertical.