Question Number 19668 by Joel577 last updated on 14/Aug/17
Commented by Joel577 last updated on 15/Aug/17
$$\mathrm{An}\:\mathrm{equateral}\:\mathrm{triangle}\:\mathrm{with}\:\mathrm{side}\:\mathrm{lenght} \\ $$$${d}.\:\mathrm{Circle}\:{L}_{\mathrm{1}} \:\mathrm{touching}\:\Delta{ABC}\:\mathrm{at}\:{A}\:\mathrm{and}\:{B}. \\ $$$$\mathrm{Circle}\:{L}_{\mathrm{2}} \:\mathrm{touching}\:{AC},\:{BC},\:\mathrm{and}\:{L}_{\mathrm{1}} \\ $$$$\mathrm{Find}\:\mathrm{the}\:\mathrm{radius}\:\mathrm{of}\:\mathrm{circle}\:{L}_{\mathrm{2}} \\ $$
Commented by IT last updated on 14/Aug/17
$$\mathrm{Please}\:\mathrm{type}\:\mathrm{the}\:\mathrm{complete}\:\mathrm{question}\:\mathrm{in} \\ $$$$\mathrm{English}. \\ $$