*I'll award Brainliest!*

In the figure shown, which pair of angles must be complementary?

A) ∠COD and ∠DOB

B) ∠AOC and ∠COD

C) ∠COB and ∠AOC

D) ∠AOC and ∠DOB

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1