Check the picture below.
make sure your calculator is in Degree mode.
Answer:
A. 
Step-by-step explanation:
Step 1: We know .3333... is
, we rewrite the equation as 

Therefore the answer would be A. 
We would first determine how to solve this, and then from there, we would then see whether the following answer would be the correct answers.

Now, we can determine whether the say "yes" or "no" to the following answers.
<span>
a 2(x-5)(x+5) = YESb -2(x+5)(x+5) = NO
c -2(5-x)(x+5) = NO</span>
Group like terms together. We'll get 4x on the left side of our equation and 16 on the right side. Then 4x = 16, and x = 4 (answer)