Question

Can someone show the work on this problem

Answer 1

4.69 in

Explanation:

By sine rule:

`( \sin \: 23 \degree)/(a) = ( \sin \: 90 \degree)/(12) \\ \\ ( \sin \: 23 \degree)/(a) = (1)/(12) \\ \\ a = 12 \: \sin 23 \degree \\ \\ a = 12 * 0.3907311285 \\ \\ a = 4.68877354 \\ \\ a \approx 4.69\: in`