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    Cos 50 Degrees

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

    What is cos 50°?

    Answer

    cos 50° ≈
    0.6428

    Angle in radians: 50° = 5π/18. The point of the angle is in quadrant I, where cosine is positive.

    ≈ — rounded to 4 decimal places. cos 50° can't be written with square roots: 50° is not a multiple of 3°.

    P(cos 50°, sin 50°) ≈ (0.6428, 0.7660)

    xyOP

    P(cos 50°, sin 50°) ≈ (0.6428, 0.7660)

    Highlighted: the projection on the x-axis — cosine, x ≈ 0.6428.

    All four functions of 50°
    FunctionExact valueDecimal
    sin 50°—≈ 0.7660
    cos 50°—≈ 0.6428
    tan 50°—≈ 1.1918
    cot 50°—≈ 0.8391

    See Also

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    https://calculat.io/en/number/trigonometry/cos--50Copy
    <a href="https://calculat.io/en/number/trigonometry/cos--50">Cos 50 Degrees: Cosine of 50° on the Unit Circle</a>Copy
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    Cos 50 Degrees: Cosine of 50° on the Unit Circle. cos 50° ≈ 0.6428. The cosine is the x-coordinate of the point at 50° on the unit circle.
    https://calculat.io/en/number/trigonometry/cos--50/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    47°≈ 0.6820
    48°≈ 0.6691
    49°≈ 0.6561
    50°≈ 0.6428
    51°≈ 0.6293
    52°≈ 0.6157
    53°≈ 0.6018
    Recalculate with different values ↑

    FAQ

    What is cos 50°?

    cos 50° ≈ 0.6428

    Why does cos 50° 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°. 50° is not, so no such exact form exists; the value is used as a decimal: cos 50° ≈ 0.6428.

    Why does a calculator show 0.9650 for cos 50?

    The calculator is in radian mode (RAD): it takes cos 50 as the cosine of 50 radians, cos 50 rad ≈ 0.9650. Switch it to degrees (DEG): cos 50° ≈ 0.6428. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also