Question

In triunghiul MNP,m(∡MNP)=60° si m(∡MPN)=40°.Aflati masura unghiului format de inaltimea si bisectoarea corespunzatoare laturii [NP].

Answer 1

notam cu MD  = _I_ NP   si M M" = bisectoarea <) NMP
<) N =60 grade ; <)P =40 grade => <)NMP =80 grade
= > <) NMM" =M"MP = 80:2 =40 grade
<)NMD =180- (60 +90 ) =180- 150 =30 grade
<)DMM" =NMM" =NMD =40-30 =10 grade