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    Cos 34 Degrees

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

    What is cos 34°?

    Answer

    cos 34° ≈
    0.8290

    Angle in radians: 34° = 17π/90. The point of the angle is in quadrant I, where cosine is positive.

    ≈ — rounded to 4 decimal places. cos 34° can't be written with square roots: 34° is not a multiple of 3°.

    P(cos 34°, sin 34°) ≈ (0.8290, 0.5592)

    xyOP

    P(cos 34°, sin 34°) ≈ (0.8290, 0.5592)

    Highlighted: the projection on the x-axis — cosine, x ≈ 0.8290.

    All four functions of 34°
    FunctionExact valueDecimal
    sin 34°—≈ 0.5592
    cos 34°—≈ 0.8290
    tan 34°—≈ 0.6745
    cot 34°—≈ 1.4826

    See Also

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    https://calculat.io/en/number/trigonometry/cos--34Copy
    <a href="https://calculat.io/en/number/trigonometry/cos--34">Cos 34 Degrees: Cosine of 34° on the Unit Circle</a>Copy
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    Cos 34 Degrees: Cosine of 34° on the Unit Circle. cos 34° ≈ 0.8290. The cosine is the x-coordinate of the point at 34° on the unit circle.
    https://calculat.io/en/number/trigonometry/cos--34/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    31°≈ 0.8572
    32°≈ 0.8480
    33°≈ 0.8387
    34°≈ 0.8290
    35°≈ 0.8192
    36°(√5 + 1)/4
    37°≈ 0.7986
    Recalculate with different values ↑

    FAQ

    What is cos 34°?

    cos 34° ≈ 0.8290

    Why does cos 34° 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°. 34° is not, so no such exact form exists; the value is used as a decimal: cos 34° ≈ 0.8290.

    Why does a calculator show −0.8486 for cos 34?

    The calculator is in radian mode (RAD): it takes cos 34 as the cosine of 34 radians, cos 34 rad ≈ −0.8486. Switch it to degrees (DEG): cos 34° ≈ 0.8290. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also