I lived in Angola for 4 years recently and I took my TV from South Africa to Angola, both countries use PAL, France is on Secam which technically is the same as PAL, you should have no problem watching TV Cabo on your TV from France, the TV we used was a 2000 model 4:3 type TV, not even Wide Screen 16:9 and we saw all their channels for 4 years without any poblem. My friend had a Wide Screen 16:9 at the same time and he saw the Angolan TV channels fine. Angola is really not so far behind wiht TV and Internet as people might think............ So in a few years time Angola would be over on a new Satelite system which they planned to install while I was still there which would give you TV, Internet etc. So the answer is yes your TV from France and most parts of the world would work fine in Angola. The never TVs doesnt worry anymore about things like NTSC, PAL or SECAM, they are compatible with all the TV standards really, I transfer VHS tapes to DVD and these old Analogue terms are not used so much more in the digital era. So bring you TV along and you will be fine.
I will not buy a TV in Luanda because the TV maker like example Sony might not cover Angola in their warentee, So bring your local TV with you.