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dragonsly Group Title

how would you find the solution for this sin^2x - .49=0<--- the answer has 4 different solutions

  • one year ago
  • one year ago

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  1. Algebraic! Group Title
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    (sinx)^2 =.49 sin(x) = +/- .49 doesn't give an interval, so it has infinite solutions... if your interval is something like 0..2pi then arcsin(-.49) (two solutions) and arcsin(.49) (two more solutions)

    • one year ago
  2. dragonsly Group Title
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    the intervals are between 0 and 2pie

    • one year ago
  3. dragonsly Group Title
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    and wouldn't it be root .49 because sin is squrd?

    • one year ago
  4. Algebraic! Group Title
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    good call...

    • one year ago
  5. Algebraic! Group Title
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    (sinx)^2 =.49 sin(x) = +/- sqrt(.49) doesn't give an interval, so it has infinite solutions... if your interval is something like 0..2pi then arcsin(-sqrt(.49) (two solutions) and arcsin(sqrt(.49) ) (two more solutions)

    • one year ago
  6. dragonsly Group Title
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    but how would you find the solution would i add 3.14 to root .49 and subtract 3.14 (btw everythings in radians)

    • one year ago
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