OpenStudy (thecomputergeek):

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

OpenStudy (batmano3):

Okay so do you understand SohCahToa?

OpenStudy (thecomputergeek):

Yes, sir!

OpenStudy (batmano3):

Allright so tell me what are we going to use?

OpenStudy (thecomputergeek):

CAH, right?

OpenStudy (batmano3):

You are correct!

OpenStudy (batmano3):

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

OpenStudy (thecomputergeek):

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

OpenStudy (batmano3):

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

OpenStudy (thecomputergeek):

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

OpenStudy (batmano3):

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