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    Cot 130 Degrees

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

    What is cot 130°?

    Answer

    cot 130° ≈
    −0.8391

    Angle in radians: 130° = 13π/18. The point of the angle is in quadrant II, where cotangent is negative.

    ≈ — rounded to 4 decimal places. cot 130° can't be written with square roots: 130° is not a multiple of 3°.

    cot 130° = cot(180° − 50°) = −cot 50° ≈ −0.8391

    cot 130° = cos 130° / sin 130° ≈ −0.8391

    xyOP

    P(cos 130°, sin 130°) ≈ (−0.6428, 0.7660)

    C(cot 130°, 1) ≈ (−0.8391, 1) — where line OP meets the line y = 1.

    All four functions of 130°
    FunctionExact valueDecimal
    sin 130°—≈ 0.7660
    cos 130°—≈ −0.6428
    tan 130°—≈ −1.1918
    cot 130°—≈ −0.8391

    Reference angle: cot 50° ≈ 0.8391

    See Also

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    https://calculat.io/en/number/trigonometry/cot--130Copy
    <a href="https://calculat.io/en/number/trigonometry/cot--130">Cot 130 Degrees: Cotangent of 130° on the Unit Circle</a>Copy
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    Cot 130 Degrees: Cotangent of 130° on the Unit Circle. cot 130° ≈ −0.8391. The cotangent is the ratio x/y of the point at 130° on the unit circle; 130° reduces to 50°.
    https://calculat.io/en/number/trigonometry/cot--130/generated.jpgCopy

    Cotangent of nearby angles

    Anglecot
    125°≈ −0.7002
    126°−√(5 − 2√5)
    127°≈ −0.7536
    130°≈ −0.8391
    134°≈ −0.9657
    135°−1
    140°≈ −1.1918
    Recalculate with different values ↑

    FAQ

    What is cot 130°?

    cot 130° ≈ −0.8391

    Why does cot 130° 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°. 130° is not, so no such exact form exists; the value is used as a decimal: cot 130° ≈ −0.8391.

    Why does a calculator show 0.3949 for cot 130?

    The calculator is in radian mode (RAD): it takes cot 130 as the cotangent of 130 radians, cot 130 rad ≈ 0.3949. Switch it to degrees (DEG): cot 130° ≈ −0.8391. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also