Sin 3pi/4 is angle 135 degrees or 45 degrees below 180 degrees. Hence it's opposite side is 1 and adjacent is 1, implying the hypothenus is sqrt(2). Hence 
Sin 3pi/4 = 1/sqrt(2). Now multiply by sqrt(2)/sqrt(2) to get: 
[1/sqrt(2).] * [sqrt(2)/sqrt(2)] = sqrt2)/2
        
             
        
        
        
Answer:
Ordered pair, (1, 5/2) does not satisfy the given equation  3x-3y=-3 
Step-by-step explanation:

Here 


 
        
             
        
        
        
1 2/3 = 5/3
4 2/5 = 22/5
5/3•22/5= 110/15
= 22/3