Question

in triunghiul dreptunghic abc avem masura unghiului A de 90 grade .ab=6 cm si Bc=10. calculatu sinb si sinc

Answer 1

sinc=AB/BC=6/10=0,6.  sinc=0,6
sin²b+sin²c=1  ⇒sin²b=1-sin²c  ⇒sinb÷√(1-sin²c)  ⇒sinb=√(1-0,36)
sinb=√0,64  ⇒sinb=0,8

Answer 2

Latura AC=$\sqrt{10^2-6^2}=8cm\;;$
sinB=AC/BC = 8/10 = 0,800 ;
sinC=6/10 = 0,600 ;