A is the answer to this question because if you plug in 8.6-5 it is approximately 3 
 
        
                    
             
        
        
        
Answer:
can you copy and paste it on a question its kinda blurry for me 
Step-by-step explanation:
 
        
                    
             
        
        
        
Polygons are similar when they have the same number of sides, 
their corresponding angles are equal, and their corresponding 
sides are all in the same ratio. 
When that ratio is ' 1 ', they are also congruent.
That can happen sometimes, but it doesn't always have to happen.
        
                    
             
        
        
        
Factor:
2sin^2x-sinx = 0
sinx(2sinx - 1) = 0
Therefore the solutions are when:
sin x = 0
And
sinx = 1/2
So sinx = 0
is true when x = 0 and pi  and all the angles coterminal with these points.  Thus, the answer is x = pi*n, (where n is some integer)
sinx = 1/2
is true when x = pi/6 and 5pi/6 and the angles coterminal with these points.
Thus, the answer is x = pi/6 + 2pi*n (where n is some integer)
and x = 5pi/6 + 2pi*n (where n is some integer)