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    Cot 142 Degrees

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

    What is cot 142°?

    Answer

    cot 142° ≈
    −1.2799

    Angle in radians: 142° = 71π/90. The point of the angle is in quadrant II, where cotangent is negative.

    ≈ — rounded to 4 decimal places. cot 142° can't be written with square roots: 142° is not a multiple of 3°.

    cot 142° = cot(180° − 38°) = −cot 38° ≈ −1.2799

    cot 142° = cos 142° / sin 142° ≈ −1.2799

    xyOP

    P(cos 142°, sin 142°) ≈ (−0.7880, 0.6157)

    C(cot 142°, 1) ≈ (−1.2799, 1) — where line OP meets the line y = 1.

    All four functions of 142°
    FunctionExact valueDecimal
    sin 142°—≈ 0.6157
    cos 142°—≈ −0.7880
    tan 142°—≈ −0.7813
    cot 142°—≈ −1.2799

    Reference angle: cot 38° ≈ 1.2799

    See Also

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    https://calculat.io/en/number/trigonometry/cot--142Copy
    <a href="https://calculat.io/en/number/trigonometry/cot--142">Cot 142 Degrees: Cotangent of 142° on the Unit Circle</a>Copy
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    Cot 142 Degrees: Cotangent of 142° on the Unit Circle. cot 142° ≈ −1.2799. The cotangent is the ratio x/y of the point at 142° on the unit circle; 142° reduces to 38°.
    https://calculat.io/en/number/trigonometry/cot--142/generated.jpgCopy

    Cotangent of nearby angles

    Anglecot
    134°≈ −0.9657
    135°−1
    140°≈ −1.1918
    142°≈ −1.2799
    144°−√(25 + 10√5)/5
    145°≈ −1.4281
    150°−√3
    Recalculate with different values ↑

    FAQ

    What is cot 142°?

    cot 142° ≈ −1.2799

    Why does cot 142° 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°. 142° is not, so no such exact form exists; the value is used as a decimal: cot 142° ≈ −1.2799.

    Why does a calculator show 1.3763 for cot 142?

    The calculator is in radian mode (RAD): it takes cot 142 as the cotangent of 142 radians, cot 142 rad ≈ 1.3763. Switch it to degrees (DEG): cot 142° ≈ −1.2799. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also