I am new and am studying Aircraft Engineering at university.
I have a problem i am trying to work out for a project Iím working on currently.
As in the title; if you have two circles, how do you define the two tangents which are common to both?
The situation is relative to an aircraft flying full 360 degree circles. So i have calculated the co-ordinates and headings of the aircraft every second through two circles.
I know i can draw out the circles and simply draw both tangents of the circles with a ruler and measure it like that. But i need something i can put into excel or a formula i can show will work for any 2 circles of the same size give the common tangents.
I think thatís everything. Both circles are the same size but can be anywhere relative to each other. I know the tangents have a common link that is the heading out of one circle will equal the reciprocal heading of the second circle.
Thanks in advance