The correct answers are:1) sin(x) = 
 2)
2) tan(x) = 
 Explanation:
Explanation:Given:

Step 1:
Since, according to the Trigonometric identity:

 -- (1)
Step 2:
Plug in the value of cos(x) in equation (1):

Step 3:
Take square-root on both sides:

sin(x) = 

Now to find the tan(x), we would use the following formula:
tan(x) = 

 --- (2)
Plug in the values of sin(x) and cos(x) in equation (2):
tan(x) = 

Hence tan(x) = 
 
 
        
                    
             
        
        
        
The answer is true to all of them.
        
                    
             
        
        
        
[ Answer ]
Y = -12 / 5
[ Explanation ]
Expand:
-3y - 9 = 2y + 3
Add 9 to both sides:
-3y - 9 + 9 = 2y + 3 - 9
Simplify:
-3y = 2y + 12
Subtract 2y from both sides:
-3y - 2y = 2y + 12 - 2y
Simplify:
-5y = 12
Divide both sides by -5:
-5y / -5 = 12 / -5
Simplify:
Y = -12 / 5
<> Arsenal <>
 
        
             
        
        
        
You start off by multiplying the second bracket by -1 to get rid of the bracket.
So,
(2x3 + x2 - 4x) - 9x3 + 3x2 =
2x3 +x2 - 4x - 9x3 + 3x2 =
(2x3 - 9x3) + (x2 + 3x2) - 4x =
-7x3 + 4x2 - 4x
        
                    
             
        
        
        
- 6b > 42 or 4b > - 4
Divide by - 6. Divide by 4. 
b < - 7 Or b > - 1