Answer:
YourMom Not Cool 
Step-by-step explanation:
yourMom is not cool
STOP CHEATING AND TRYING TO SEE ANSWER
 
        
             
        
        
        
Answer:
From a starting location of 75 feet below sea level, the submarine is descending 50 feet per hour. Answer is.D
Step-by-step explanation:
Used an Calculator  
 I hope this helps
 
        
                    
             
        
        
        
Let's check.
x = 5π/24
4x = 5π/6
cos 4x = cos(5π/6) = cos 150° = -√3/2
cos² 4x = (-√3/2)^2 = 3/4
4 cos² 4x  -3  = 4 (3/4) - 3 = 0
Answer: TRUE
 
        
             
        
        
        
Answer:
\frac{79}{9} \pi 
Step-by-step explanation: