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    Cos 134 Degrees

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

    What is cos 134°?

    Answer

    cos 134° ≈
    −0.6947

    Angle in radians: 134° = 67π/90. The point of the angle is in quadrant II, where cosine is negative.

    ≈ — rounded to 4 decimal places. cos 134° can't be written with square roots: 134° is not a multiple of 3°.

    cos 134° = cos(180° − 46°) = −cos 46° ≈ −0.6947

    P(cos 134°, sin 134°) ≈ (−0.6947, 0.7193)

    xyOP

    P(cos 134°, sin 134°) ≈ (−0.6947, 0.7193)

    Highlighted: the projection on the x-axis — cosine, x ≈ −0.6947.

    All four functions of 134°
    FunctionExact valueDecimal
    sin 134°—≈ 0.7193
    cos 134°—≈ −0.6947
    tan 134°—≈ −1.0355
    cot 134°—≈ −0.9657

    Reference angle: cos 46° ≈ 0.6947

    See Also

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    https://calculat.io/en/number/trigonometry/cos--134Copy
    <a href="https://calculat.io/en/number/trigonometry/cos--134">Cos 134 Degrees: Cosine of 134° on the Unit Circle</a>Copy
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    Cos 134 Degrees: Cosine of 134° on the Unit Circle. cos 134° ≈ −0.6947. The cosine is the x-coordinate of the point at 134° on the unit circle; 134° reduces to 46°.
    https://calculat.io/en/number/trigonometry/cos--134/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    126°−√(10 − 2√5)/4
    127°≈ −0.6018
    130°≈ −0.6428
    134°≈ −0.6947
    135°−√2/2
    140°≈ −0.7660
    142°≈ −0.7880
    Recalculate with different values ↑

    FAQ

    What is cos 134°?

    cos 134° ≈ −0.6947

    Why does cos 134° 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°. 134° is not, so no such exact form exists; the value is used as a decimal: cos 134° ≈ −0.6947.

    Why does a calculator show −0.4638 for cos 134?

    The calculator is in radian mode (RAD): it takes cos 134 as the cosine of 134 radians, cos 134 rad ≈ −0.4638. Switch it to degrees (DEG): cos 134° ≈ −0.6947. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also