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Posted by on Wednesday, November 2, 2011 at 10:02pm.

Solve 2cos sq x = 1 using the unit circle.

  • Trig - , Wednesday, November 2, 2011 at 10:10pm

    2 cos √x = 1
    cos √x = 1/2
    √x = π/3 or √x = 5π/3
    x = π^2/9 or x = 25π^2/9

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