Algebra

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Find the complete solution of each equation. Express your answer in degrees.
sec^2 θ+sec θ=0
2 cos^2 θ+1=0
cot θ=cot^2 θ
sin^2 θ+5 sin θ=0

  • Algebra -

    1/cos^2 + 1/cos = 0
    1 + cos = 0
    cos = -1
    angle = 180 deg or pi radians

    cos^2 = -1/2
    impossible, square of real number is positive

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