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    Cot 87 Degrees

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

    What is cot 87°?

    Answer

    cot 87° ≈
    0.0524

    Angle in radians: 87° = 29π/60. The point of the angle is in quadrant I, where cotangent is positive.

    ≈ — rounded to 4 decimal places. An exact form of cot 87° in square roots exists, but it is unwieldy — nested radicals.

    cot 87° = cos 87° / sin 87° ≈ 0.0524

    xyOP

    P(cos 87°, sin 87°) ≈ (0.0523, 0.9986)

    C(cot 87°, 1) ≈ (0.0524, 1) — where line OP meets the line y = 1.

    All four functions of 87°
    FunctionExact valueDecimal
    sin 87°—≈ 0.9986
    cos 87°—≈ 0.0523
    tan 87°—≈ 19.0811
    cot 87°—≈ 0.0524

    See Also

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    https://calculat.io/en/number/trigonometry/cot--87Copy
    <a href="https://calculat.io/en/number/trigonometry/cot--87">Cot 87 Degrees: Cotangent of 87° on the Unit Circle</a>Copy
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    Cot 87 Degrees: Cotangent of 87° on the Unit Circle. cot 87° ≈ 0.0524. The cotangent is the ratio x/y of the point at 87° on the unit circle.
    https://calculat.io/en/number/trigonometry/cot--87/generated.jpgCopy

    Cotangent of nearby angles

    Anglecot
    84°≈ 0.1051
    85°≈ 0.0875
    86°≈ 0.0699
    87°≈ 0.0524
    88°≈ 0.0349
    89°≈ 0.0175
    90°0
    Recalculate with different values ↑

    FAQ

    What is cot 87°?

    cot 87° ≈ 0.0524

    Is there an exact value of cot 87°?

    Yes: 87° 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 87° ≈ 0.0524.

    Why does a calculator show −0.6933 for cot 87?

    The calculator is in radian mode (RAD): it takes cot 87 as the cotangent of 87 radians, cot 87 rad ≈ −0.6933. Switch it to degrees (DEG): cot 87° ≈ 0.0524. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also