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    Cot 13 Degrees

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

    What is cot 13°?

    Answer

    cot 13° ≈
    4.3315

    Angle in radians: 13° = 13π/180. The point of the angle is in quadrant I, where cotangent is positive.

    ≈ — rounded to 4 decimal places. cot 13° can't be written with square roots: 13° is not a multiple of 3°.

    cot 13° = cos 13° / sin 13° ≈ 4.3315

    xyOP

    P(cos 13°, sin 13°) ≈ (0.9744, 0.2250)

    C(cot 13°, 1) ≈ (4.3315, 1) — where line OP meets the line y = 1; C is beyond the drawing, the arrow points to it.

    All four functions of 13°
    FunctionExact valueDecimal
    sin 13°—≈ 0.2250
    cos 13°—≈ 0.9744
    tan 13°—≈ 0.2309
    cot 13°—≈ 4.3315

    See Also

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    https://calculat.io/en/number/trigonometry/cot--13Copy
    <a href="https://calculat.io/en/number/trigonometry/cot--13">Cot 13 Degrees: Cotangent of 13° on the Unit Circle</a>Copy
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    Cot 13 Degrees: Cotangent of 13° on the Unit Circle. cot 13° ≈ 4.3315. The cotangent is the ratio x/y of the point at 13° on the unit circle.
    https://calculat.io/en/number/trigonometry/cot--13/generated.jpgCopy

    Cotangent of nearby angles

    Anglecot
    10°≈ 5.6713
    11°≈ 5.1446
    12°≈ 4.7046
    13°≈ 4.3315
    14°≈ 4.0108
    15°2 + √3
    16°≈ 3.4874
    Recalculate with different values ↑

    FAQ

    What is cot 13°?

    cot 13° ≈ 4.3315

    Why does cot 13° 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°. 13° is not, so no such exact form exists; the value is used as a decimal: cot 13° ≈ 4.3315.

    Why does a calculator show 2.1597 for cot 13?

    The calculator is in radian mode (RAD): it takes cot 13 as the cotangent of 13 radians, cot 13 rad ≈ 2.1597. Switch it to degrees (DEG): cot 13° ≈ 4.3315. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also