Question

Me Ajudeem Porfavor!!!

Answer 1

$a) sen 60^{o}= \frac{x}{30} \\ sen 60^{o}*30=x \\ x= \frac{ \sqrt{3} }{2}*30 \\ x=\frac{30 \sqrt{3} }{2} \\ x=15\sqrt{3} \\ \\ b)cos 60^{o}= \frac{2\sqrt{3}}{x} \\ x=\frac{2\sqrt{3}}{cos 60^{o}} \\ x=\frac{2\sqrt{3}}{ \frac{1}{2} } \\ x=2\sqrt{3}* \frac{2}{1} \\ x=4\sqrt{3} \\ \\ c)tg 60^{o}= \frac{3\sqrt{5}}{x} \\ x=\frac{3\sqrt{5}}{tg 60^{o}} \\ x=\frac{3\sqrt{5}}{ \sqrt{3} } } \\ x=\frac{3\sqrt{5}: \sqrt{3} }{ \sqrt{3: \sqrt{3}} } } \\ x= \sqrt{15}$