Question

1.Triunghiul MNP dreptunghic in M, MN=6cm, MP=8cm. Calculati sin N si cos N

Answer 1

mnp =dr => teorema lui pitagora ca NP=10
sin n = cat op /ip
sin n =mp / np
sin n =4 supra 5
cos n =cat al / ip
cos n=mn/np
cos n =6/ 10
cos n=3 supra 5
sper ca te-am jutat

Answer 2

Daca desenezi figura,NP²=MN²+MP²
NP²=6²+8²
NP²=36+64
NP²=100
NP²=√100
NP=10
Sin = cateta opusa supra ipotenuza
Sin N=$\frac{MP}{NP}$=8 supra 10 =4 supra 5
Cos N=cateta alaturata supra ipotenuza
Cos N=$\frac{MN}{NP}$=6 supra 10=3 supra 5