y = kx
k - constant of proportionality
y = 5x
k = 5
 
        
                    
             
        
        
        
360/60 = 6
6 minutes = 1 degree
6 X 7 = 42
42 degrees is your Answer
        
             
        
        
        
It's clear in this picture that this is an isosceles triangle 
So the angles are 29 , 29 , (11x-65)

<h3>The angles are 29 , 122 , 29</h3>
Hope this will help...