Hello, DBS!

I've made a little progress . . .

I have to find the angle between two parametric curves:

. .

I can't even find their intersection point.

Equating 's and 's:

. .

Equate [1] and [2]: .

We have: .

. . Hence: .

It turns out that is an extraneous root.

Hence, the intersection occurs at

Then [1] becomes: .

Therefore, the curves intersect at: .

But check my work . . .please!

.