Answer:
6. 60°
7. 5.19559
8. 7.96011
Step-by-step explanation:
6. The sum of angles in a triangle is 180°, so the remaining angle is ...
   180° -40° -80° = 60°
7. The lengths of sides are proportional to the sine of the opposite angle (Law of Sines).
   a = c·sin(A)/sin(C) = 7·sin(40°)/sin(60°) ≈ 5.19559
8. Same explanation as 7.
   b = c·sin(B)/sin(C) = 7·sin(80°)/sin(60°) ≈ 7.96011   
 
        
                    
             
        
        
        
Assuming the interest is simple interest, as opposed to compound interest,
 
 
        
        
        
Answer:
Side AB
Explanation:
The opposite side is the side that is not touching the reference angle.
 
        
             
        
        
        
Ok -7-7=-14 because your subtracting a negative with a negative and then it will be a negative then if you multiply a negative and a negative it will be a positive