Neka je

šiljastokutan trokut u kojem je

,

,

. Neka je

polovište stranice

, a

i

redom nožišta visina iz vrhova

i

. Odredite veličinu

u stupnjevima.
Let

be an acute-angled triangle where

,

, and

. Let

be the midpoint of side

, and let

and

be the feet of the altitudes from vertices

and

, respectively. Determine the measure of

in degrees.
[lang=hr]
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.
[/lang]
[lang=en]
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.
[/lang]