## Agent_A one year ago Need a good and CLEAR explanation with all steps indicated, and in legible handwriting (preferably typed-up). (See photo)

if you replace y with 1 this starts to look like you're just paraming an ellipse. and that's v do-able http://www.mathopenref.com/coordparamellipse.html and for the tangent, many ways but simplest might be to just differentiate $$\frac{\dot y}{\dot x}$$