Matematika

Pertanyaan

Buktikan identitas
Sin x/1+cos x=sec x-1/tan x

1 Jawaban

  • sinx / 1 + cosx = secx - 1 / tanx

    sinx / 1 + cosx = 1/cosx - 1 / sinx/cosx

    sinx / 1 + cosx = 1 - cosx / cosx / sinx/cosx

    sinx / 1 + cosx = 1 - cosx / sinx

    sinx / 1 + cosx = (1 - cosx)(1 + cosx) / sinx (1 + cosx

    sinx / 1 + cosx = 1 - cos²x / sinx (1 + cosx)

    sinx / 1 + cosx = sin²x / sinx (1 + cosx)

    sinx / 1 + cosx = sinx / 1 + cosx

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