Question Number 63256 by ajfour last updated on 01/Jul/19
Commented by ajfour last updated on 01/Jul/19
$${Find}\:{r}={OB},\:{such}\:{that}\:\bigtriangleup{ABC} \\ $$$${has}\:{maximum}\:{area}. \\ $$
Commented by ajfour last updated on 02/Jul/19
$${Is}\:{this}\:{question}\:{wrong}\:? \\ $$
Commented by mr W last updated on 03/Jul/19
$${i}\:{think}\:{there}\:{should}\:{be}\:{a}\:{solution},\:{but} \\ $$$${for}\:\alpha=\mathrm{45}°\:{there}\:{are}\:{two}\:{possible} \\ $$$${triangles},\:{and}\:{for}\:\alpha\neq\mathrm{45}°\:{there}\:{is} \\ $$$${only}\:{one}\:{possible}\:{triangle}. \\ $$