Answer:
TRUE
Step-by-step explanation:
An even function is a function that satisfies that f(x) = f(-x). Also, we know that cosine is an even function, therefore cos(theta) equals cos(-theta).
 
        
             
        
        
        
Answer:
I am not sure of the answer but it is between A and C but my final answer is gonna be C. 
 
        
             
        
        
        
Answer:
4,500
Step-by-step explanation:
150 x 30 
 15 x 3 = 45, add 2 0's at end, 4,500
 
        
             
        
        
        
Answer:
15
Step-by-step explanation:
38/2.5=15.2
Round it to 15