There is only one solution
        
             
        
        
        
From the law of sines, we have

where  is the leg we're interested in,
 is the leg we're interested in,  is the hypothenuse,
 is the hypothenuse,  is the angle opposite to
 is the angle opposite to  , and
, and  is the angle between
 is the angle between  and
 and  .
.
So, in the first case, we can use

And in the second excercise, we use

 
        
                    
             
        
        
        
Answer:
12 square units
Step-by-step explanation:
A = 1/2·h(sum of bases)
A = 1/2(4)(2+4)
A = 2(6) which is 12 square units
 
        
             
        
        
        
<h2><u><em>
Answer:  A) f (x) = (x-5) (x+8)
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<h2><u><em>
Step-by-step explanation: Please tell me if this is wrong! Bye! Have a good day!</em></u></h2>
 
        
        
        
B. Decreases
(Hopefully I’m right!)