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    Cos 47 Degrees

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

    What is cos 47°?

    Answer

    cos 47° ≈
    0.6820

    Angle in radians: 47° = 47π/180. The point of the angle is in quadrant I, where cosine is positive.

    ≈ — rounded to 4 decimal places. cos 47° can't be written with square roots: 47° is not a multiple of 3°.

    P(cos 47°, sin 47°) ≈ (0.6820, 0.7314)

    xyOP

    P(cos 47°, sin 47°) ≈ (0.6820, 0.7314)

    Highlighted: the projection on the x-axis — cosine, x ≈ 0.6820.

    All four functions of 47°
    FunctionExact valueDecimal
    sin 47°—≈ 0.7314
    cos 47°—≈ 0.6820
    tan 47°—≈ 1.0724
    cot 47°—≈ 0.9325

    See Also

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    https://calculat.io/en/number/trigonometry/cos--47Copy
    <a href="https://calculat.io/en/number/trigonometry/cos--47">Cos 47 Degrees: Cosine of 47° on the Unit Circle</a>Copy
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    Cos 47 Degrees: Cosine of 47° on the Unit Circle. cos 47° ≈ 0.6820. The cosine is the x-coordinate of the point at 47° on the unit circle.
    https://calculat.io/en/number/trigonometry/cos--47/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    44°≈ 0.7193
    45°√2/2
    46°≈ 0.6947
    47°≈ 0.6820
    48°≈ 0.6691
    49°≈ 0.6561
    50°≈ 0.6428
    Recalculate with different values ↑

    FAQ

    What is cos 47°?

    cos 47° ≈ 0.6820

    Why does cos 47° 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°. 47° is not, so no such exact form exists; the value is used as a decimal: cos 47° ≈ 0.6820.

    Why does a calculator show −0.9923 for cos 47?

    The calculator is in radian mode (RAD): it takes cos 47 as the cosine of 47 radians, cos 47 rad ≈ −0.9923. Switch it to degrees (DEG): cos 47° ≈ 0.6820. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also