I'm guessing that you don't really want the formulas.  I think what you actually want 
is the definitions of those functions of an acute angle when it's in a right triangle.
Cosine = (adjacent side) / (hypotenuse)
Tangent = (opposite side) / (adjacent side)
Sine = (opposite side) / (hypotenuse)
Tell me if I'm wrong, and I'll find some formulas for you.
        
             
        
        
        
go down to (0, -9) on the graph, from there go up four and over one and plot the next point, up four over one again, and repeat
 
        
             
        
        
        
Answer:
x = 27
Step-by-step explanation:
Given
 - 6 = 2 ( add 6 to both sides )
 - 6 = 2 ( add 6 to both sides )
 = 8 ( square both sides )
 = 8 ( square both sides )
2x + 10 = 8² = 64 ( subtract 10 from both sides )
2x = 54 ( divide both sides by 2 )
x = 27
 
        
             
        
        
        
A the answer is 9.76
B: he paid with 10 dollar bill you have to subtract 10.00-9.76 he received 24 cents back!
        
             
        
        
        
Answer:
22
Step-by-step explanation:
7^2-3^3
(7)(7)-(3)(3)(3)
49-(3)(9)
49-27
22