Write each expression in terms of sine and cosine ,then simplify expression so no quotients appear.

cot(x)sin(x)

a. sin(x)
b. 1
c. cos(x)
d. tan(x)

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

boxplot e is the answer