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Answer:
Step-by-step explanation:
<u>Here is how I found it:</u>
- Flip the picture 180°.
- Then, measure the angle.
<em>Required:</em>
- The angle is 90°.
- If you don't pay attention, you might mistake it for a 150° angle.
Correct choice is A.
a. Parameterize 
by
with 
.
b/c. The line integral of 
over is
d. Notice that we can write the line integral as
By Green's theorem, the line integral is equivalent to
where 
is the triangle bounded by , and this integral is simply twice the area of . is a right triangle with legs 2 and 5, so its area is 5 and the integral's value is 10.
