Answer:
X = 48
Step-by-step explanation:
When you type sin(42) in your calculator it will give you something around 0.669.
If you try reverse sinus sin-1(0.669) it will give you 42.
Therefore you can say that:
Cos(x) = 0.669
So you can reverse the cos to get your answer
Cos-1(0.669) = 48 
Or 
Cos-1 (sin(42)) 
 
        
             
        
        
        
Answer:
20%
Step-by-step explanation:
1/5 is the same as 2/10
2/10 is the same as 0.2
0.20 is the same as 20%
=) u got it! 
 
        
                    
             
        
        
        
9514 1404 393
Answer:
   y = 5/3x +8
Step-by-step explanation:
The slope of the perpendicular line is the opposite reciprocal of the slope of the given line. The given slope is -3/5, so the perpendicular slope is ...
   -1/(-3/5) = 5/3
That and the given y-intercept can be put into the slope-intercept equation ...
   y = mx + b . . . . . line of slope m and y-intercept b
   y = 5/3x + 8
 
        
             
        
        
        
Step-by-step explanation:
hope it would help you...
 
        
             
        
        
        
The answer is c .........