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    Tan 17 Degrees

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

    What is tan 17°?

    Answer

    tan 17° ≈
    0.3057

    Angle in radians: 17° = 17π/180. The point of the angle is in quadrant I, where tangent is positive.

    ≈ — rounded to 4 decimal places. tan 17° can't be written with square roots: 17° is not a multiple of 3°.

    tan 17° = sin 17° / cos 17° ≈ 0.3057

    xyOP

    P(cos 17°, sin 17°) ≈ (0.9563, 0.2924)

    T(1, tan 17°) ≈ (1, 0.3057) — where line OP meets the line x = 1.

    All four functions of 17°
    FunctionExact valueDecimal
    sin 17°—≈ 0.2924
    cos 17°—≈ 0.9563
    tan 17°—≈ 0.3057
    cot 17°—≈ 3.2709

    See Also

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    https://calculat.io/en/number/trigonometry/tan--17Copy
    <a href="https://calculat.io/en/number/trigonometry/tan--17">Tan 17 Degrees: Tangent of 17° on the Unit Circle</a>Copy
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    Tan 17 Degrees: Tangent of 17° on the Unit Circle. tan 17° ≈ 0.3057. The tangent is the ratio y/x of the point at 17° on the unit circle.
    https://calculat.io/en/number/trigonometry/tan--17/generated.jpgCopy

    Tangent of nearby angles

    Angletan
    14°≈ 0.2493
    15°2 − √3
    16°≈ 0.2867
    17°≈ 0.3057
    18°√(25 − 10√5)/5
    19°≈ 0.3443
    20°≈ 0.3640
    Recalculate with different values ↑

    FAQ

    What is tan 17°?

    tan 17° ≈ 0.3057

    Why does tan 17° 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°. 17° is not, so no such exact form exists; the value is used as a decimal: tan 17° ≈ 0.3057.

    Why does a calculator show 3.4939 for tan 17?

    The calculator is in radian mode (RAD): it takes tan 17 as the tangent of 17 radians, tan 17 rad ≈ 3.4939. Switch it to degrees (DEG): tan 17° ≈ 0.3057. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also