Answer:
e = 15.29
Step-by-step explanation:
using the law of sin, we can set this up as sin 40/12 = sin 55/e.
40 is the degree and is diagonal from 12. 55 is degree which is diagonal from e.
Cross multiplying sin40 with e, and 12 with sin 55, you get "e sin 40 = 12 sin 55"
Divide both sides by sin 40 and you get e = 15.29 :)
