In triunghiul ABC dreptunghic,m(<A)=90 grade,AD perpendixular BC, D apartine[BC], BD=9 cm, DC=16cm, calculati: a) inaltimea AD; b) aria triunghiului ABC; c)tg(<C)
a)... Conform t,inaltimii in triunghiul dr. AD = √(9*16) = 3*4=12(cm) b)... BC = BD+DC = 9cm+16cm = 25cm ; A = (25*12)/2 = 150cm² c)... tg(< C) = AD/CD=12/16=3/4=0,750