Answer:
A is a solution because it is in the shaded area.
Step-by-step explanation:
 
        
             
        
        
        
So you have to put 25 inside the blank box.
look at the attached picture
Hope it will help you
Good luck on your assignment
 
        
                    
             
        
        
        
Answer:
The equivalent trigonometric ratio in Quadrant I is 
Step-by-step explanation:
The terminal side of  is in the 3rd quadrant.
 is in the 3rd quadrant.
The principal angle is  
 
In other words, the terminal side of  makes an acute angle of
  makes an acute angle of  radian with the positive x-axis. Acute angles are in the first quadrant.
 radian with the positive x-axis. Acute angles are in the first quadrant.
Since the cosine ratio is negative in the 3rd quadrant, 
 
 
        
                    
             
        
        
        
For what? Sorry is there an attachment?
        
                    
             
        
        
        
Answer:
- 70
Step-by-step explanation:
10 -5(4 × 5) + 20 =
= 10 - 5×20 + 20
= 10 - 100 + 20
= - 90 + 20
= - 70