Answer:
The sin-1 is cancelling out the angle it has ordered.
Sin 45 = 1/ √ 2
This is why we can also check Cos 1/ √ 2 and Tan 1
Step-by-step explanation:
 
        
                    
             
        
        
        
 Answer:

Step-by-step explanation:
We have two fractions and are being asked to subtract them.
7/8 and 1/3 don't have the same denominator, so to do as so, we need to find the LCM of both denominators, multiply them to that, and do the same for the numerators.
So what is the LCM (Least Common Multiple) of 8 and 3?
24. 
Therefore :



 
        
                    
             
        
        
        
I honestly dont know how to figure this one out.
        
             
        
        
        
Answer:
the squared root of 80 or 4 times the square root of 5.
Step-by-step explanation:
Hope this helps!
 
        
                    
             
        
        
        
-7+15. this is what i think it is.