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    Sin 25 Degrees

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

    What is sin 25°?

    Answer

    sin 25° ≈
    0.4226

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

    ≈ — rounded to 4 decimal places. sin 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 y-axis — sine, y ≈ 0.4226.

    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

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    https://calculat.io/en/number/trigonometry/sin--25Copy
    <a href="https://calculat.io/en/number/trigonometry/sin--25">Sin 25 Degrees: Sine of 25° on the Unit Circle - Calculatio</a>Copy
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    Sin 25 Degrees: Sine of 25° on the Unit Circle. sin 25° ≈ 0.4226. The sine is the y-coordinate of the point at 25° on the unit circle.
    https://calculat.io/en/number/trigonometry/sin--25/generated.jpgCopy

    Sine of nearby angles

    Anglesin
    22°≈ 0.3746
    23°≈ 0.3907
    24°≈ 0.4067
    25°≈ 0.4226
    26°≈ 0.4384
    27°≈ 0.4540
    28°≈ 0.4695
    Recalculate with different values ↑

    FAQ

    What is sin 25°?

    sin 25° ≈ 0.4226

    Why does sin 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: sin 25° ≈ 0.4226.

    Why does a calculator show −0.1324 for sin 25?

    The calculator is in radian mode (RAD): it takes sin 25 as the sine of 25 radians, sin 25 rad ≈ −0.1324. Switch it to degrees (DEG): sin 25° ≈ 0.4226. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also