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    Cot 80 Degrees

    Sin, Cos, Tan, Cot of an Angle
    Function
    Angle (°)

    What is cot 80°?

    Answer

    cot 80° ≈
    0.1763

    Angle in radians: 80° = 4π/9. The point of the angle is in quadrant I, where cotangent is positive.

    ≈ — rounded to 4 decimal places. cot 80° can't be written with square roots: 80° is not a multiple of 3°.

    cot 80° = cos 80° / sin 80° ≈ 0.1763

    xyOP

    P(cos 80°, sin 80°) ≈ (0.1736, 0.9848)

    C(cot 80°, 1) ≈ (0.1763, 1) — where line OP meets the line y = 1.

    All four functions of 80°
    FunctionExact valueDecimal
    sin 80°—≈ 0.9848
    cos 80°—≈ 0.1736
    tan 80°—≈ 5.6713
    cot 80°—≈ 0.1763

    See Also

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    https://calculat.io/en/number/trigonometry/cot--80Copy
    <a href="https://calculat.io/en/number/trigonometry/cot--80">Cot 80 Degrees: Cotangent of 80° on the Unit Circle</a>Copy
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    Cot 80 Degrees: Cotangent of 80° on the Unit Circle. cot 80° ≈ 0.1763. The cotangent is the ratio x/y of the point at 80° on the unit circle.
    https://calculat.io/en/number/trigonometry/cot--80/generated.jpgCopy

    Cotangent of nearby angles

    Anglecot
    77°≈ 0.2309
    78°≈ 0.2126
    79°≈ 0.1944
    80°≈ 0.1763
    81°≈ 0.1584
    82°≈ 0.1405
    83°≈ 0.1228
    Recalculate with different values ↑

    FAQ

    What is cot 80°?

    cot 80° ≈ 0.1763

    Why does cot 80° have no exact value?

    A trigonometric value of a whole number of degrees can be written with square roots only when the angle is a multiple of 3°. 80° is not, so no such exact form exists; the value is used as a decimal: cot 80° ≈ 0.1763.

    Why does a calculator show 0.1111 for cot 80?

    The calculator is in radian mode (RAD): it takes cot 80 as the cotangent of 80 radians, cot 80 rad ≈ 0.1111. Switch it to degrees (DEG): cot 80° ≈ 0.1763. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also