Alright, lets get started.
Please take a look at the diagram attached.
The reference angle of 75 will be 75
As it is mentioned that the angle intersects the unit circle means r = 1
So, finding cos
cos 75 = 
cos 75 = 
cos 75 = 0.259    :   Answer
Hope it will help :)
 
        
             
        
        
        
Answer:
1063.75
Step-by-step explanation:
That’s your final answer brother :)
 
        
                    
             
        
        
        
Answer:
8:19
Step-by-step explanation:
Ball B:  diameter in mm = 9.5 * 10 = 95 mm
Ratio of Ball A to Ball B = 40 : 95
=  8:19  answer
 
        
                    
             
        
        
        
Answer: 1 
Explanation: anything to the power of 0 is 1 so if it is x to the power of 0 it would be 1