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    Cos 26 Degrees

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

    What is cos 26°?

    Answer

    cos 26° ≈
    0.8988

    Angle in radians: 26° = 13π/90. The point of the angle is in quadrant I, where cosine is positive.

    ≈ — rounded to 4 decimal places. cos 26° can't be written with square roots: 26° is not a multiple of 3°.

    P(cos 26°, sin 26°) ≈ (0.8988, 0.4384)

    xyOP

    P(cos 26°, sin 26°) ≈ (0.8988, 0.4384)

    Highlighted: the projection on the x-axis — cosine, x ≈ 0.8988.

    All four functions of 26°
    FunctionExact valueDecimal
    sin 26°—≈ 0.4384
    cos 26°—≈ 0.8988
    tan 26°—≈ 0.4877
    cot 26°—≈ 2.0503

    See Also

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    https://calculat.io/en/number/trigonometry/cos--26Copy
    <a href="https://calculat.io/en/number/trigonometry/cos--26">Cos 26 Degrees: Cosine of 26° on the Unit Circle</a>Copy
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    Cos 26 Degrees: Cosine of 26° on the Unit Circle. cos 26° ≈ 0.8988. The cosine is the x-coordinate of the point at 26° on the unit circle.
    https://calculat.io/en/number/trigonometry/cos--26/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    23°≈ 0.9205
    24°≈ 0.9135
    25°≈ 0.9063
    26°≈ 0.8988
    27°≈ 0.8910
    28°≈ 0.8829
    29°≈ 0.8746
    Recalculate with different values ↑

    FAQ

    What is cos 26°?

    cos 26° ≈ 0.8988

    Why does cos 26° 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°. 26° is not, so no such exact form exists; the value is used as a decimal: cos 26° ≈ 0.8988.

    Why does a calculator show 0.6469 for cos 26?

    The calculator is in radian mode (RAD): it takes cos 26 as the cosine of 26 radians, cos 26 rad ≈ 0.6469. Switch it to degrees (DEG): cos 26° ≈ 0.8988. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also