Which shows all the exact solutions of 2sec^2x-tan^4x=-1 ? Give your answer in radians.
       
      
                
     
    
    
    
    
    2 answers:
            
                    
              
              
                
                
Lets solve the trigonometric equation 
 Step 1.
Step 1. Use the trigonometric identity: 

:
![2[1+tan^2(x)]-tan^4(x)=1](https://tex.z-dn.net/?f=2%5B1%2Btan%5E2%28x%29%5D-tan%5E4%28x%29%3D1)
 Step 2.
Step 2. Subtract 1 from both sides of the equation:

 Step 3.
Step 3. Substitute 

:
 Step 3.
Step 3. Multiply both sides of the equation by -1:

 Step 4.
Step 4. Solve for 

:
 Step 5.
Step 5. Substitute 

:
 Step 6.
Step 6. Solve for 

:


Since 

 is not a real root, we can rule out 




We can conclude that the exact solution of the equation are 

 and 

, which are approximately 

 and 

 respectively. 
 
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Jackie didn’t subtract 12 from 8 right, I think
        
                    
             
        
        
        
Answer:
4
Step-by-step explanation:
Based on the information you have given me, p = 1/3.
All we need to do is substitute that value into the expression:
12p = 12(1/3) = 4
 
        
                    
             
        
        
        
Answer:
y=3-2x
Step-by-step explanation:
Move all terms that don't contain y to the right and solve.
 
        
             
        
        
        
Answer:
Yes
Step-by-step explanation:
7 = x
5 = y
5 = X + - 2
5 = X - 2
If X is 7 then
5 = 7-2
5=5
yes
 
        
             
        
        
        
Answer:
the top are right im not sure about bottom