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Asked: 2020-10-28T12:13:12+00:00 In:

Tìm góc nhọn a biết tan a+cot a=2

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Tìm góc nhọn a biết tan a+cot a=2

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    1. Gerda

      Gerda

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      `tan ∝ + cot ∝ = 2`

      `<=> tan ∝ + 1/(tan ∝) = 2`

      `=> tan² ∝ + 1 = 2tan ∝`

      `<=> tan² ∝ – 2tan ∝ + 1 = 0`

      `<=> tan ∝ = 1`

      `=> ∝ = 45^0`

       

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    2. Nho

      Nho

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      Bạn xem hình nhé ^^

      tim-goc-nhon-a-biet-tan-a-cot-a-2

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