Cosθ = adjacent / hypotenuse

I hope I helped you^_^
 
        
             
        
        
        
125+42= 167
180-167= 13 degrees
Triangles is always equaled to 180 degrees.
Answer: choice 3
I am pretty sure this is the answer
 
        
                    
             
        
        
        
5/10 bc it is equal to 1/2 which is bigger than 2/5 or 4/10 1/3
        
             
        
        
        
Answer:
28 (length' unit)²
Step-by-step explanation:
- the area of all A rectangle is 4*8 =32
- The area of the missing portion of the rectangle is equal to the area of the triangle ½*(2)*(4)=4
- the area of this shape equal to 
the area of all A rectangle - The area of the missing portion of the rectangle = 32 - 4 = 28 (length' unit)²