If 3 inch....................................20 ft
?inc...........................................57 feet
(57*3)/20=171/20=8.55 inch
Given:
In triangle
.
To find:
The
.
Solution:
According to the law of sines:

Taking
, we get



Taking sin inverse on both sides, we get



Therefore, the correct option is b.
Ok I will let you know tomorrow afternoon when I get to the school
sooooooo....whats the question???