Видео ютуба по тегу Betatasombadebatanta

Prove that : tan^{-1} (2a -b)/b√3 + tan^{-1} (2b -a)/a√3 = π/3
Prove that : tan^{-1} (2a -b)/b√3 + tan^{-1} (2b -a)/a√3 = π/3
Africa doesn't need more of this
Africa doesn't need more of this "help"