Question

Va rog! Ex din poza! Dau coroana!

Answer 1

MA=MB=15 m

ΔBAC ~ ΔBMO =>MO||AC=> BM/BA=MO/AC<=>15/30=MO/10=>1/2=MO/10=>MO=10/2=5 m=> O e la cota 5 m

In ΔBOM , m(∡M)=90° =>tg B=MO/MB=5/15=>tg B=1/3