The discount is $231.57 , the price after discount would be $283.03
        
                    
             
        
        
        
B is the right answer because a is too short and c and d are too long
        
             
        
        
        
Line tu is parallel to rs
        
                    
             
        
        
        
We have the formula (sin x)^2 + (cos x)^2 = 1;
Then, sin α = 

cos β = 

We apply the formula sin ( α + β ) = sin α x cos β + sin β x cos α = (3/5)x(4/5) + (4/5)x(3/5) = 12/25 + 12/25 = 24/25;
 
        
        
        
What does that mean cause I don't know if it is possibility