Which of these is a problem with using nuclear energy?

A.
It is very expensive to use.

B.
It is a non-renewable energy source.

C.
There aren't enough qualified technicians.

D.
We don't have a way to contain the radioactive waste produced.

I think the answer is B

Explanation:

Nuclear energy is usually considered a non-renewable energy source. Although uranium is found in rocks all over the world, nuclear power plants usually use a very rare type of uranium, U-235. Uranium is a non-renewable resource.

answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.