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anonymous

  • one year ago

Find all solutions to the equation. 7 sin2x - 14 sin x + 2 = -5

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  1. Nnesha
    • one year ago
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    same set it equal to zero you will get quadratic equation \[\huge\rm Ax^2 + Bx+C =0\]

  2. anonymous
    • one year ago
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    so.. 7x^2-14x+2 = -5 then set it equal to zero by adding 5 to both sides. then factoring 7(x^2-2x+1) = 0 factor again 7(x-1)(x-1) = 0 so x = 1 with a multiplicity of 2?

  3. Nnesha
    • one year ago
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    oh nvm it's

  4. Nnesha
    • one year ago
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    yes right so now you can replace x by sin (sinx - 1)(sin x -1)= 0 so sin x =1 sin x = 1

  5. Nnesha
    • one year ago
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    and \[7 \cancel{=} 0\]

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