Question

kindly give the explanation​

Answer 1

Answer:

2Mkijhyshsyeusnshsidbdgdb

Answer 2

Explanation:

$\frac{sin \: i}{sin \: r} = \frac{sin \: 60}{sin \: 30} = \frac{ \sqrt{3} }{2 \ } \div \frac{1}{2} = \sqrt{3} \: \: \: \: ans$

so 40 is speed then 40root 3

i think ..