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    Tan 19 Degrees

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

    What is tan 19°?

    Answer

    tan 19° ≈
    0.3443

    Angle in radians: 19° = 19π/180. The point of the angle is in quadrant I, where tangent is positive.

    ≈ — rounded to 4 decimal places. tan 19° can't be written with square roots: 19° is not a multiple of 3°.

    tan 19° = sin 19° / cos 19° ≈ 0.3443

    xyOP

    P(cos 19°, sin 19°) ≈ (0.9455, 0.3256)

    T(1, tan 19°) ≈ (1, 0.3443) — where line OP meets the line x = 1.

    All four functions of 19°
    FunctionExact valueDecimal
    sin 19°—≈ 0.3256
    cos 19°—≈ 0.9455
    tan 19°—≈ 0.3443
    cot 19°—≈ 2.9042

    See Also

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    https://calculat.io/en/number/trigonometry/tan--19Copy
    <a href="https://calculat.io/en/number/trigonometry/tan--19">Tan 19 Degrees: Tangent of 19° on the Unit Circle</a>Copy
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    Tan 19 Degrees: Tangent of 19° on the Unit Circle. tan 19° ≈ 0.3443. The tangent is the ratio y/x of the point at 19° on the unit circle.
    https://calculat.io/en/number/trigonometry/tan--19/generated.jpgCopy

    Tangent of nearby angles

    Angletan
    16°≈ 0.2867
    17°≈ 0.3057
    18°√(25 − 10√5)/5
    19°≈ 0.3443
    20°≈ 0.3640
    21°≈ 0.3839
    22°≈ 0.4040
    Recalculate with different values ↑

    FAQ

    What is tan 19°?

    tan 19° ≈ 0.3443

    Why does tan 19° 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°. 19° is not, so no such exact form exists; the value is used as a decimal: tan 19° ≈ 0.3443.

    Why does a calculator show 0.1516 for tan 19?

    The calculator is in radian mode (RAD): it takes tan 19 as the tangent of 19 radians, tan 19 rad ≈ 0.1516. Switch it to degrees (DEG): tan 19° ≈ 0.3443. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also