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    Tan 38 Degrees

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

    What is tan 38°?

    Answer

    tan 38° ≈
    0.7813

    Angle in radians: 38° = 19π/90. The point of the angle is in quadrant I, where tangent is positive.

    ≈ — rounded to 4 decimal places. tan 38° can't be written with square roots: 38° is not a multiple of 3°.

    tan 38° = sin 38° / cos 38° ≈ 0.7813

    xyOP

    P(cos 38°, sin 38°) ≈ (0.7880, 0.6157)

    T(1, tan 38°) ≈ (1, 0.7813) — where line OP meets the line x = 1.

    All four functions of 38°
    FunctionExact valueDecimal
    sin 38°—≈ 0.6157
    cos 38°—≈ 0.7880
    tan 38°—≈ 0.7813
    cot 38°—≈ 1.2799

    See Also

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    https://calculat.io/en/number/trigonometry/tan--38Copy
    <a href="https://calculat.io/en/number/trigonometry/tan--38">Tan 38 Degrees: Tangent of 38° on the Unit Circle</a>Copy
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    Tan 38 Degrees: Tangent of 38° on the Unit Circle. tan 38° ≈ 0.7813. The tangent is the ratio y/x of the point at 38° on the unit circle.
    https://calculat.io/en/number/trigonometry/tan--38/generated.jpgCopy

    Tangent of nearby angles

    Angletan
    35°≈ 0.7002
    36°√(5 − 2√5)
    37°≈ 0.7536
    38°≈ 0.7813
    39°≈ 0.8098
    40°≈ 0.8391
    41°≈ 0.8693
    Recalculate with different values ↑

    FAQ

    What is tan 38°?

    tan 38° ≈ 0.7813

    Why does tan 38° 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°. 38° is not, so no such exact form exists; the value is used as a decimal: tan 38° ≈ 0.7813.

    Why does a calculator show 0.3103 for tan 38?

    The calculator is in radian mode (RAD): it takes tan 38 as the tangent of 38 radians, tan 38 rad ≈ 0.3103. Switch it to degrees (DEG): tan 38° ≈ 0.7813. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also