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anonymous
 3 years ago
2sin^2x+sinx1=0
anonymous
 3 years ago
2sin^2x+sinx1=0

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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0let u = sin(x) 2u^2 + u  1 = 0

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0could you expand to the next step?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0can't you just solve as a quadratic ... or cant you roll this way because its trig?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0next step: factorise: (2u1)(u+1)=0 thus 2u1 = 0 or u+1=0 u=1/2 u=1 now sub back sinx

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0is your domain for x specified?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0sinx = 1/2 or sinx=1 now solve for x

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0ahh, got it! I didn't realize it was a quadratic. Thank you so much!
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