Question: Solving parameter function

I have defined a function in a parameter form x:= .... y:= .... and I have defined a circle in a parameter form X:= .... Y:= .... Now I want to calculate the intersectionpoints. I could use: solve(x=X,t) and solve (y=Y,t) but the teacher teached me that some points are going lost if you use to separate commando's. Now is the question what's the commando for combining these two solves. My concrete example: restart:x:=2*cos(t)+cos(2*t); x := 2 cos(t) + cos(2 t) > y:=2*sin(t)-sin(2*t); > y := 2 sin(t) - sin(2 t) Circle: > X:=1*cos(t); X := cos(t) > Y:=1*sin(t); Y := sin(t) In class we have seen that you must find three points of intersection. Thank you in advance
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