U trokutu
kut u vrhu
iznosi
, a u vrhu
iznosi
. Ako je
središte upisane, a
središte opisane kružnice, odredi veličinu kuta
.
In triangle
angle at
is
, and the angle at
is
. If
is the incenter, and
is the circumcenter, find the angle
.
[lang=hr]
U trokutu $\triangle ABC$ kut u vrhu $B$ iznosi $70^\circ$, a u vrhu $C$ iznosi $50^\circ$. Ako je $I$ središte upisane, a $O$ središte opisane kružnice, odredi veličinu kuta $\measuredangle IBO$.
[/lang]
[lang=en]
In triangle $\triangle ABC$ angle at $B$ is $70^\circ$, and the angle at $C$ is $50^\circ$. If $I$ is the incenter, and $O$ is the circumcenter, find the angle $\measuredangle IBO$.
[/lang]
