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    Cot 40 Degrees

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

    What is cot 40°?

    Answer

    cot 40° ≈
    1.1918

    Angle in radians: 40° = 2π/9. The point of the angle is in quadrant I, where cotangent is positive.

    ≈ — rounded to 4 decimal places. cot 40° can't be written with square roots: 40° is not a multiple of 3°.

    cot 40° = cos 40° / sin 40° ≈ 1.1918

    xyOP

    P(cos 40°, sin 40°) ≈ (0.7660, 0.6428)

    C(cot 40°, 1) ≈ (1.1918, 1) — where line OP meets the line y = 1.

    All four functions of 40°
    FunctionExact valueDecimal
    sin 40°—≈ 0.6428
    cos 40°—≈ 0.7660
    tan 40°—≈ 0.8391
    cot 40°—≈ 1.1918

    See Also

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    https://calculat.io/en/number/trigonometry/cot--40Copy
    <a href="https://calculat.io/en/number/trigonometry/cot--40">Cot 40 Degrees: Cotangent of 40° on the Unit Circle</a>Copy
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    Cot 40 Degrees: Cotangent of 40° on the Unit Circle. cot 40° ≈ 1.1918. The cotangent is the ratio x/y of the point at 40° on the unit circle.
    https://calculat.io/en/number/trigonometry/cot--40/generated.jpgCopy

    Cotangent of nearby angles

    Anglecot
    37°≈ 1.3270
    38°≈ 1.2799
    39°≈ 1.2349
    40°≈ 1.1918
    41°≈ 1.1504
    42°≈ 1.1106
    43°≈ 1.0724
    Recalculate with different values ↑

    FAQ

    What is cot 40°?

    cot 40° ≈ 1.1918

    Why does cot 40° 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°. 40° is not, so no such exact form exists; the value is used as a decimal: cot 40° ≈ 1.1918.

    Why does a calculator show −0.8951 for cot 40?

    The calculator is in radian mode (RAD): it takes cot 40 as the cotangent of 40 radians, cot 40 rad ≈ −0.8951. Switch it to degrees (DEG): cot 40° ≈ 1.1918. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also