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11th grade

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tan^2x=tanx+2

  • 11th grade -

    Note that the equation can be rearranged and factored as follows:
    tan^2x -tanx -2 = 0
    (tanx -2)(tanx +1) = 0
    tan x = 2 or -1
    There are four angles between 0 and 360 degrees that are solutions. One of them is 135 degrees. Another is 63.435 degrees. See if you can find the others.

  • 11th grade -

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