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    Cos 23 Degrees

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

    What is cos 23°?

    Answer

    cos 23° ≈
    0.9205

    Angle in radians: 23° = 23π/180. The point of the angle is in quadrant I, where cosine is positive.

    ≈ — rounded to 4 decimal places. cos 23° can't be written with square roots: 23° is not a multiple of 3°.

    P(cos 23°, sin 23°) ≈ (0.9205, 0.3907)

    xyOP

    P(cos 23°, sin 23°) ≈ (0.9205, 0.3907)

    Highlighted: the projection on the x-axis — cosine, x ≈ 0.9205.

    All four functions of 23°
    FunctionExact valueDecimal
    sin 23°—≈ 0.3907
    cos 23°—≈ 0.9205
    tan 23°—≈ 0.4245
    cot 23°—≈ 2.3559

    See Also

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    https://calculat.io/en/number/trigonometry/cos--23Copy
    <a href="https://calculat.io/en/number/trigonometry/cos--23">Cos 23 Degrees: Cosine of 23° on the Unit Circle</a>Copy
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    Cos 23 Degrees: Cosine of 23° on the Unit Circle. cos 23° ≈ 0.9205. The cosine is the x-coordinate of the point at 23° on the unit circle.
    https://calculat.io/en/number/trigonometry/cos--23/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    20°≈ 0.9397
    21°≈ 0.9336
    22°≈ 0.9272
    23°≈ 0.9205
    24°≈ 0.9135
    25°≈ 0.9063
    26°≈ 0.8988
    Recalculate with different values ↑

    FAQ

    What is cos 23°?

    cos 23° ≈ 0.9205

    Why does cos 23° 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°. 23° is not, so no such exact form exists; the value is used as a decimal: cos 23° ≈ 0.9205.

    Why does a calculator show −0.5328 for cos 23?

    The calculator is in radian mode (RAD): it takes cos 23 as the cosine of 23 radians, cos 23 rad ≈ −0.5328. Switch it to degrees (DEG): cos 23° ≈ 0.9205. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also