Because she randomly added a 72 before the 78
        
                    
             
        
        
        
Answer:
0.7999989281
Step-by-step explanation:
x1 = cos^-1 (3/5) 
x1= 53.13° 
sin(53.13) = 0.7999989281
 
        
             
        
        
        
Answer:
408,506
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
8 times larger
Step-by-step explanation:
(15+10) is the singular equation alone. Muiltiply it by 8, and it's 8 times larger then the initial singular expression. Therefore, the answer is 8 times larger.