Consider the curve given by the implicit equation x 3 − 4xy + y 2 = 0. (a) find all points (a, b. on the curve where the tangent line is vertical

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy