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    Cot 98 Degrees

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

    What is cot 98°?

    Answer

    cot 98° ≈
    −0.1405

    Angle in radians: 98° = 49π/90. The point of the angle is in quadrant II, where cotangent is negative.

    ≈ — rounded to 4 decimal places. cot 98° can't be written with square roots: 98° is not a multiple of 3°.

    cot 98° = cot(180° − 82°) = −cot 82° ≈ −0.1405

    cot 98° = cos 98° / sin 98° ≈ −0.1405

    xyOP

    P(cos 98°, sin 98°) ≈ (−0.1392, 0.9903)

    C(cot 98°, 1) ≈ (−0.1405, 1) — where line OP meets the line y = 1.

    All four functions of 98°
    FunctionExact valueDecimal
    sin 98°—≈ 0.9903
    cos 98°—≈ −0.1392
    tan 98°—≈ −7.1154
    cot 98°—≈ −0.1405

    Reference angle: cot 82° ≈ 0.1405

    See Also

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    https://calculat.io/en/number/trigonometry/cot--98Copy
    <a href="https://calculat.io/en/number/trigonometry/cot--98">Cot 98 Degrees: Cotangent of 98° on the Unit Circle</a>Copy
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    Cot 98 Degrees: Cotangent of 98° on the Unit Circle. cot 98° ≈ −0.1405. The cotangent is the ratio x/y of the point at 98° on the unit circle; 98° reduces to 82°.
    https://calculat.io/en/number/trigonometry/cot--98/generated.jpgCopy

    Cotangent of nearby angles

    Anglecot
    89°≈ 0.0175
    90°0
    97°≈ −0.1228
    98°≈ −0.1405
    100°≈ −0.1763
    101°≈ −0.1944
    105°√3 − 2
    Recalculate with different values ↑

    FAQ

    What is cot 98°?

    cot 98° ≈ −0.1405

    Why does cot 98° 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°. 98° is not, so no such exact form exists; the value is used as a decimal: cot 98° ≈ −0.1405.

    Why does a calculator show 1.4289 for cot 98?

    The calculator is in radian mode (RAD): it takes cot 98 as the cotangent of 98 radians, cot 98 rad ≈ 1.4289. Switch it to degrees (DEG): cot 98° ≈ −0.1405. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also