anonymous
  • anonymous
-2sin^2(x)-1cos(x)=-1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
The smallest non-negative solution is: The next smallest non-negative solution is:
campbell_st
  • campbell_st
sin^2(x) = 1 - cos^2(x) use the substitution -2(1 - cos^2(x)) - cos(x) = -1 2cos^2(x) - cos(x) - 1= 0 (2cos(x) +1)(cos(x) -1)=0 cos(x) = -1/2 and 1 next you need to find the angles that represent cos(x) = -1/2 and cos(x) = 1 it will depend on the domain if its 0<= x<= 360 then there will be 3 answers
anonymous
  • anonymous
What's it talking about when it asks me what the smallest non-negative solution and the next smallest non-negative solution? It doesn't provide a domain/range.

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anonymous
  • anonymous
i wanna to ask a question is there anyone here heard abt. the double angle!
campbell_st
  • campbell_st
the non negative solutions occur when x>= 0 then the solution is x = 0, 360, 720 etc...

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