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    Cot 39 Degrees

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

    What is cot 39°?

    Answer

    cot 39° ≈
    1.2349

    Angle in radians: 39° = 13π/60. The point of the angle is in quadrant I, where cotangent is positive.

    ≈ — rounded to 4 decimal places. An exact form of cot 39° in square roots exists, but it is unwieldy — nested radicals.

    cot 39° = cos 39° / sin 39° ≈ 1.2349

    xyOP

    P(cos 39°, sin 39°) ≈ (0.7771, 0.6293)

    C(cot 39°, 1) ≈ (1.2349, 1) — where line OP meets the line y = 1.

    All four functions of 39°
    FunctionExact valueDecimal
    sin 39°—≈ 0.6293
    cos 39°—≈ 0.7771
    tan 39°—≈ 0.8098
    cot 39°—≈ 1.2349

    See Also

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    https://calculat.io/en/number/trigonometry/cot--39Copy
    <a href="https://calculat.io/en/number/trigonometry/cot--39">Cot 39 Degrees: Cotangent of 39° on the Unit Circle</a>Copy
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    Cot 39 Degrees: Cotangent of 39° on the Unit Circle. cot 39° ≈ 1.2349. The cotangent is the ratio x/y of the point at 39° on the unit circle.
    https://calculat.io/en/number/trigonometry/cot--39/generated.jpgCopy

    Cotangent of nearby angles

    Anglecot
    36°√(25 + 10√5)/5
    37°≈ 1.3270
    38°≈ 1.2799
    39°≈ 1.2349
    40°≈ 1.1918
    41°≈ 1.1504
    42°≈ 1.1106
    Recalculate with different values ↑

    FAQ

    What is cot 39°?

    cot 39° ≈ 1.2349

    Is there an exact value of cot 39°?

    Yes: 39° is a multiple of 3°, and the values of such angles can be written with square roots — but the expression is unwieldy, with nested radicals built from the values of 18° and 15° (3° = 18° − 15°). In practice the decimal is used: cot 39° ≈ 1.2349.

    Why does a calculator show 0.2767 for cot 39?

    The calculator is in radian mode (RAD): it takes cot 39 as the cotangent of 39 radians, cot 39 rad ≈ 0.2767. Switch it to degrees (DEG): cot 39° ≈ 1.2349. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also