Question

Fie ABC triunghi dreptunghic, BC=6cm,R=2radical din 3,m(â)=? rezolvare plizzz

Answer 1

Se aplica teorema sinusurilor: $\frac{AB}{sinC}= \frac{AC}{sinB}= \frac{BC}{sinA} =2R,deci, \frac{6}{sinA}=2R$, deci sinA=$\frac{BC}{2R}= \frac{6}{4 \sqrt{3} } = \frac{ \sqrt{3} }{2},deci$, m(∡A)=60°.