MathDB
Three Tangents to a Circle

Source:

February 15, 2009
LaTeX

Problem Statement

Triangle PAB PAB is formed by three tangents to circle O O and < APB \equal{} 40^{\circ}; then angle AOB AOB equals: <spanclass=′latex−bold′>(A)</span> 45∘<spanclass=′latex−bold′>(B)</span> 50∘<spanclass=′latex−bold′>(C)</span> 55∘<spanclass=′latex−bold′>(D)</span> 60∘<spanclass=′latex−bold′>(E)</span> 70∘ <span class='latex-bold'>(A)</span>\ 45^{\circ} \qquad<span class='latex-bold'>(B)</span>\ 50^{\circ} \qquad<span class='latex-bold'>(C)</span>\ 55^{\circ} \qquad<span class='latex-bold'>(D)</span>\ 60^{\circ} \qquad<span class='latex-bold'>(E)</span>\ 70^{\circ}
Back to ProblemsView on AoPS