Question

В ΔABC, ∠A=30*, ∠B=45*, BC=10√2
Найти: AC - ?

Answer 1

теорема синусов
a/sinA=b/sinB
$x = (10 \sqrt{2} \times \frac{ \sqrt{2} }{2}) \div \frac{1}{2} = 10 \times 2 = 20 =$