va rog dau coroana!!!
![Va Rog Dau Coroana class=](https://ro-static.z-dn.net/files/d72/a7a7ac7ba197e2e0dbce7a830a5837b8.jpg)
Răspuns:
Explicație pas cu pas:
m arc/2 ; 40/2=20 ; 86/2=43 ; 91/2=45,5=45°30'