Question

Un triunghi dreptunghic cu un unghi de 30° si ipotenuza de 12cm are o catete de.............. Cm??????
Va rooooooooog ajutați-ma!!!!!!

Answer 1

Daca sti unghiul de 30° si ipotenuza de 12 cm aplicam sin30°.
sin30°=$\dfrac{1}{2}$=$\dfrac{AB}{BC} \\ \dfrac{1}{2}= \dfrac{AB}{12}=\ \textgreater \ AB= \dfrac{12}{2}=6\ cm$
Si ptr a calcula AC folosim cos30°.
cos30°=$\dfrac{ \sqrt{3}}{2}= \dfrac{AC}{BC} \\ \dfrac{ \sqrt{3} }{2}= \dfrac{AC}{12}=\ \textgreater \ AC= \dfrac{12 \sqrt{3} }{ 2}=6 \sqrt{3}$
Sper ca te-am ajutat