despicable80
despicable80 despicable80
  • 13-07-2017
  • Mathematics
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find all solutions in radian [0,2pi) solve 4sinx= -cos^2x +4

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Аноним Аноним
  • 13-07-2017
I hope this helps you


-cos²x= sin²x-1


4.sinx = sin²x-1+4


sin²x-4.sinx +3=0


(sinx-3)(sinx-1)=0


sinx≠3


sinx =1


SİN90=1


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