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    Tan 25 Degrees

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

    What is tan 25°?

    Answer

    tan 25° ≈
    0.4663

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

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

    tan 25° = sin 25° / cos 25° ≈ 0.4663

    xyOP

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

    T(1, tan 25°) ≈ (1, 0.4663) — where line OP meets the line x = 1.

    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/tan--25Copy
    <a href="https://calculat.io/en/number/trigonometry/tan--25">Tan 25 Degrees: Tangent of 25° on the Unit Circle</a>Copy
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    Tan 25 Degrees: Tangent of 25° on the Unit Circle. tan 25° ≈ 0.4663. The tangent is the ratio y/x of the point at 25° on the unit circle.
    https://calculat.io/en/number/trigonometry/tan--25/generated.jpgCopy

    Tangent of nearby angles

    Angletan
    22°≈ 0.4040
    23°≈ 0.4245
    24°≈ 0.4452
    25°≈ 0.4663
    26°≈ 0.4877
    27°≈ 0.5095
    28°≈ 0.5317
    Recalculate with different values ↑

    FAQ

    What is tan 25°?

    tan 25° ≈ 0.4663

    Why does tan 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: tan 25° ≈ 0.4663.

    Why does a calculator show −0.1335 for tan 25?

    The calculator is in radian mode (RAD): it takes tan 25 as the tangent of 25 radians, tan 25 rad ≈ −0.1335. Switch it to degrees (DEG): tan 25° ≈ 0.4663. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also