Find all solutions in the interval [0, 2pi)

2sin^2 x = 2 + cox x

I kno that most of the solutions are gonna be 1st quadrant solutions,

sin is positive in the 1st and 2nd and cos is negative in the 4th quadrant

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- June 30th 2008, 04:03 PMNoAsherelolSolutions with intervals
Find all solutions in the interval [0, 2pi)

2sin^2 x = 2 + cox x

I kno that most of the solutions are gonna be 1st quadrant solutions,

sin is positive in the 1st and 2nd and cos is negative in the 4th quadrant - June 30th 2008, 04:18 PMPlato
Make these changes.

Can you solve ?

Let . - June 30th 2008, 04:26 PMNoAsherelol
yes i could solve that thank you fo rthe asistance, i dont get where your getting

2-2cos^2 x + 2 + cos(x) - June 30th 2008, 04:45 PMNoAsherelol
so are these the solutions

y=cos x

(2y-1)(y+1)

Cos(x)=1/2 and cos(x)=-1

is this correct - June 30th 2008, 04:47 PMJhevon
- June 30th 2008, 09:00 PMNoAsherelol
- June 30th 2008, 09:11 PMJhevon
- June 30th 2008, 09:18 PMNoAsherelol

Im coming up with cos(x)=0 and cos(x)=-1, but the interval is [0, 2pi) with those answers it could only be 1 solution but it asked me to find solutions yo i suck at this class, i might have tell my guidance counselor to switch me out.....sorry if im buiggin the mess out of you - June 30th 2008, 09:29 PMJhevon
- July 1st 2008, 04:14 AMNoAsherelol
- July 1st 2008, 03:23 PMJhevon