Trig Equations

[ginamarie313]

I am stuck! I started the worksheet with no problems, but now I have no clue what to do next. The problem is:

6sin^2(x)-5sin(x)-1=0

I can't factor it, so somehow I think I need to plug it into the quadratic formula. ??? Help!!

 

[pka]

6z<SUP>2</SUP>−5z−1=(6z+1)(z−1), you can factor it.
Let z=sin(x).

 

[ginamarie313]

how did you go from subtraction to addition?

 

[ginamarie313]

Oh, okay, I see what I did wrong, I wrote it down wrong on my paper. Thank you!