What is the value of x?

A.
3

B.
6

C.

3 square root of 2

D.

6 square root of 2
http://lv.k12.com/mediaFiles/Ninth_Grade/Math/Unit17844/Lesson69373/VHS_PA_S2_04_L208_L308_LQ_Q5.gif

Question

What is the value of x?


  
 
  


  

  A. 
  3   
    


  

  B. 
  6   
    


  

  C. 
 
 3 square root of 2   
    


  

  D. 
 
6 square root of 2
 http://lv.k12.com/mediaFiles/Ninth_Grade/Math/Unit17844/Lesson69373/VHS_PA_S2_04_L208_L308_LQ_Q5.gif

batmano3 · Answer

Okay so do you understand SohCahToa?

thecomputergeek · Answer

Yes, sir!

batmano3 · Answer

Allright so tell me what are we going to use?

thecomputergeek · Answer

CAH, right?

batmano3 · Answer

You are correct!

batmano3 · Answer

Now plug them in and tell me what you get :)

thecomputergeek · Answer

Well, I think cos(45)= 0.70 so it should be...B..?

batmano3 · Answer

Mmh not quiet what i got is C reason is because you would set it up like this

$$\cos (45)=\left(\begin{matrix}6 \ x\end{matrix}\right)$$

thecomputergeek · Answer

Ohhh!! That makes so much more sense! Thanks!

batmano3 · Answer

:) no problem please fan me and medal !! Thanks so much :)