Well you can check what type of angle it is! like depending on how it is slouched like a right angle is 90° for example.
Answer:
-8
Step-by-step explanation:
(-2)(-2)(-2)
4(-2)
-8
Parameterize
by

with
and
.
Then the surface element is

and the surface integral is

Answer:
13.
Step-by-step explanation:
If each of the first 12 guests happens to be born in a different month, the 13th person will have to be born in the same month as one of the first 12.