Answer: 
Step-by-step explanation:
For this exercise you need to use the Inverse Trigonometric function arccosine, which is defined as the inverse function of the cosine.
Then, to find an angle α, this is:

In this case, you can identify that:

Then, substituting values into
and evaluating, you get that the measure of the angle "B" to the nearest degree, is:

This question isn't relevant to this site.
Answer: Sunday by 2 miles
Step-by-step explanation:
Area is length x width so if the dimensions are both 1,
the area is