Answer:
1. Commutative Property of Addition
2. Distributive property
Step-by-step explanation:
Given



Required 
Justify each step
From Line 1 to 2:
The property from Line 1 to 2 depicts  ;
;
i.e.

This is referred to as Commutative Property of Addition
From Line 2 to 3:
The property here depicts 
i.e. 


This is referred to as Distributive property
 
        
             
        
        
        
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Answer:
Step-by-step explanation:
irdk maf is hard am i right
 
        
             
        
        
        
Answer:
what are the choices
Step-by-step explanation:
 
        
                    
             
        
        
        
The angle of depression is 
tan^-1 3/7 = 23.2 deg