Two ways to go about it: keep parts of the construction for clarity... and the vector math by itself.
Notes: Lengths are easier to do in GGB with segments. Natural. (But I want the vector methods.) ____ Pole and Polar (2 of 3): 1. Basic construction: [url]http://www.geogebratube.org/material/show/id/34578[/url] [b]→2. Reduced Construction (& Vectors)[/b] 3. Ruslan and Ludmila: [url]http://www.geogebratube.org/material/show/id/34586[/url] Used In: [b]The Tangency Problem of Apollonius:[/b] [url]http://www.geogebratube.org/material/show/id/34645[/url]