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    Tan 28 Degrees

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

    What is tan 28°?

    Answer

    tan 28° ≈
    0.5317

    Angle in radians: 28° = 7π/45. The point of the angle is in quadrant I, where tangent is positive.

    ≈ — rounded to 4 decimal places. tan 28° can't be written with square roots: 28° is not a multiple of 3°.

    tan 28° = sin 28° / cos 28° ≈ 0.5317

    xyOP

    P(cos 28°, sin 28°) ≈ (0.8829, 0.4695)

    T(1, tan 28°) ≈ (1, 0.5317) — where line OP meets the line x = 1.

    All four functions of 28°
    FunctionExact valueDecimal
    sin 28°—≈ 0.4695
    cos 28°—≈ 0.8829
    tan 28°—≈ 0.5317
    cot 28°—≈ 1.8807

    See Also

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    https://calculat.io/en/number/trigonometry/tan--28Copy
    <a href="https://calculat.io/en/number/trigonometry/tan--28">Tan 28 Degrees: Tangent of 28° on the Unit Circle</a>Copy
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    Tan 28 Degrees: Tangent of 28° on the Unit Circle. tan 28° ≈ 0.5317. The tangent is the ratio y/x of the point at 28° on the unit circle.
    https://calculat.io/en/number/trigonometry/tan--28/generated.jpgCopy

    Tangent of nearby angles

    Angletan
    25°≈ 0.4663
    26°≈ 0.4877
    27°≈ 0.5095
    28°≈ 0.5317
    29°≈ 0.5543
    30°√3/3
    31°≈ 0.6009
    Recalculate with different values ↑

    FAQ

    What is tan 28°?

    tan 28° ≈ 0.5317

    Why does tan 28° 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°. 28° is not, so no such exact form exists; the value is used as a decimal: tan 28° ≈ 0.5317.

    Why does a calculator show −0.2814 for tan 28?

    The calculator is in radian mode (RAD): it takes tan 28 as the tangent of 28 radians, tan 28 rad ≈ −0.2814. Switch it to degrees (DEG): tan 28° ≈ 0.5317. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also