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find the values of x in the interval [x,2pi] that satisfy sin^2x + sinx - 2 = 0
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(sin(x) +2)(sin(x)-1)
how did you get that
(sin(x) +2)(sin(x)-1)=0
Just factor it. How do you factor \[u^2 +u-2=(u+2)(u-1)\]
Since sin(x) cannot equal 2 then sin(x) =1 hence \[ x=\frac \pi 2 + 2\ k \pi \]
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Did you get it?
im lost at sinx not = to 2
Sin x varies between 0 and 1 Solutions in interval [x,2pi] required by the question
So \[ x=\frac \pi 2 \]
what does k stand for?
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