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    Tan 355 Degrees

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

    What is tan 355°?

    Answer

    tan 355° ≈
    −0.0875

    Angle in radians: 355° = 71π/36. The point of the angle is in quadrant IV, where tangent is negative.

    ≈ — rounded to 4 decimal places. tan 355° can't be written with square roots: 355° is not a multiple of 3°.

    tan 355° = tan(360° − 5°) = −tan 5° ≈ −0.0875

    tan 355° = sin 355° / cos 355° ≈ −0.0875

    xyOP

    P(cos 355°, sin 355°) ≈ (0.9962, −0.0872)

    T(1, tan 355°) ≈ (1, −0.0875) — where line OP meets the line x = 1.

    All four functions of 355°
    FunctionExact valueDecimal
    sin 355°—≈ −0.0872
    cos 355°—≈ 0.9962
    tan 355°—≈ −0.0875
    cot 355°—≈ −11.4301

    Reference angle: tan 5° ≈ 0.0875

    See Also

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    https://calculat.io/en/number/trigonometry/tan--355Copy
    <a href="https://calculat.io/en/number/trigonometry/tan--355">Tan 355 Degrees: Tangent of 355° on the Unit Circle</a>Copy
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    Tan 355 Degrees: Tangent of 355° on the Unit Circle. tan 355° ≈ −0.0875. The tangent is the ratio y/x of the point at 355° on the unit circle; 355° reduces to 5°.
    https://calculat.io/en/number/trigonometry/tan--355/generated.jpgCopy

    Tangent of nearby angles

    Angletan
    341°≈ −0.3443
    342°−√(25 − 10√5)/5
    345°√3 − 2
    355°≈ −0.0875
    360°0
    390°√3/3
    400°≈ 0.8391
    Recalculate with different values ↑

    FAQ

    What is tan 355°?

    tan 355° ≈ −0.0875

    Why does tan 355° 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°. 355° is not, so no such exact form exists; the value is used as a decimal: tan 355° ≈ −0.0875.

    Why does a calculator show 0.0000301 for tan 355?

    The calculator is in radian mode (RAD): it takes tan 355 as the tangent of 355 radians, tan 355 rad ≈ 0.0000301. Switch it to degrees (DEG): tan 355° ≈ −0.0875. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also