Feedback form
Hi! What do you think?

Drag it here or paste with Ctrl+V

    You can also email us on infocalculat.io

    Cos 25 Degrees

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

    What is cos 25°?

    Answer

    cos 25° ≈
    0.9063

    Angle in radians: 25° = 5π/36. The point of the angle is in quadrant I, where cosine is positive.

    ≈ — rounded to 4 decimal places. cos 25° can't be written with square roots: 25° is not a multiple of 3°.

    P(cos 25°, sin 25°) ≈ (0.9063, 0.4226)

    xyOP

    P(cos 25°, sin 25°) ≈ (0.9063, 0.4226)

    Highlighted: the projection on the x-axis — cosine, x ≈ 0.9063.

    All four functions of 25°
    FunctionExact valueDecimal
    sin 25°—≈ 0.4226
    cos 25°—≈ 0.9063
    tan 25°—≈ 0.4663
    cot 25°—≈ 2.1445

    See Also

    Share This Calculation
    Print
    https://calculat.io/en/number/trigonometry/cos--25Copy
    <a href="https://calculat.io/en/number/trigonometry/cos--25">Cos 25 Degrees: Cosine of 25° on the Unit Circle</a>Copy
    Facebook
    Twitter
    Telegram
    WhatsApp
    Viber
    Email
    Cos 25 Degrees: Cosine of 25° on the Unit Circle. cos 25° ≈ 0.9063. The cosine is the x-coordinate of the point at 25° on the unit circle.
    https://calculat.io/en/number/trigonometry/cos--25/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    22°≈ 0.9272
    23°≈ 0.9205
    24°≈ 0.9135
    25°≈ 0.9063
    26°≈ 0.8988
    27°≈ 0.8910
    28°≈ 0.8829
    Recalculate with different values ↑

    FAQ

    What is cos 25°?

    cos 25° ≈ 0.9063

    Why does cos 25° 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°. 25° is not, so no such exact form exists; the value is used as a decimal: cos 25° ≈ 0.9063.

    Why does a calculator show 0.9912 for cos 25?

    The calculator is in radian mode (RAD): it takes cos 25 as the cosine of 25 radians, cos 25 rad ≈ 0.9912. Switch it to degrees (DEG): cos 25° ≈ 0.9063. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also