Check the picture below.
recall that negative angles go "clockwise".
 
        
             
        
        
        
Answer: look at the picture
Step-by-step explanation:
 
        
             
        
        
        
Answer:
180 plants  
Step-by-step explanation:
the area of a right triangle is: ab/2
side a = 8
side b = 15
8 x 15 = 120
120/2 = 60
Michael wants 3 plants for every square yard (multiply by 3)
60 x 3 = 180
 
        
                    
             
        
        
        
Answer:
Im pretty sure that is an obtuse angle
Step-by-step explanation:
Hope that helps