Vrijeme: 08:48

EM2 bez raka | EM2 without cancer #2

Neka je ABC šiljastokutan trokut u kojem je \angle BAC = 72^\circ, \angle CBA = 59^\circ, \angle ACB = 49^\circ. Neka je P polovište stranice BC, a M i N redom nožišta visina iz vrhova B i C. Odredite veličinu \angle MPN u stupnjevima.
Let ABC be an acute-angled triangle where \angle BAC = 72^\circ, \angle CBA = 59^\circ, and \angle ACB = 49^\circ. Let P be the midpoint of side BC, and let M and N be the feet of the altitudes from vertices B and C, respectively. Determine the measure of \angle MPN in degrees.