Answer:
A.  change in a dependent variable
 
        
                    
             
        
        
        
Because thats not how its pronounced anymore.
Happy studying ^_^
        
             
        
        
        
The sum of the angles of the triangle is 180 degrees, so:
 (x + 70) + 76 + 41 = 180
 (x + 70) + 117 = 180
 x + 70 = 63
 x = -7
Hope that helps!
 
        
             
        
        
        
9514 1404 393
Answer:
   107/18
Step-by-step explanation:
Your calculator and/or knowledge of trig function values can help you evaluate this.
   = 4/3(1/3) +3/4 -3(3/4) +3(3) -2(1)
   = 4/9 +3/4 -9/4 +9 -2
   = 107/18
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tan(30°) = 1/√3
tan(45°) = 1
tan(60°) = √3
sin(60°) = cos(30°) = √3/2