Question

Fie ABC un triunghi dreptunghic cu m(A)=90 de grade are BC=3cm si AB= 1cm . Calculati ctg de C

Answer 1

Pai faci Pitagora si iti da AC=√BC2-AB2=2√2 Dupa ctgC=AC/AB=2√2

Answer 2

bc^2=ab^2+ac^2
ac^2=bc^2-ab^2=9-1=8
ac=2 radical2
ctgc=ac/ab=2radical2