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    Cos 49 Degrees

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

    What is cos 49°?

    Answer

    cos 49° ≈
    0.6561

    Angle in radians: 49° = 49π/180. The point of the angle is in quadrant I, where cosine is positive.

    ≈ — rounded to 4 decimal places. cos 49° can't be written with square roots: 49° is not a multiple of 3°.

    P(cos 49°, sin 49°) ≈ (0.6561, 0.7547)

    xyOP

    P(cos 49°, sin 49°) ≈ (0.6561, 0.7547)

    Highlighted: the projection on the x-axis — cosine, x ≈ 0.6561.

    All four functions of 49°
    FunctionExact valueDecimal
    sin 49°—≈ 0.7547
    cos 49°—≈ 0.6561
    tan 49°—≈ 1.1504
    cot 49°—≈ 0.8693

    See Also

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    https://calculat.io/en/number/trigonometry/cos--49Copy
    <a href="https://calculat.io/en/number/trigonometry/cos--49">Cos 49 Degrees: Cosine of 49° on the Unit Circle</a>Copy
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    Cos 49 Degrees: Cosine of 49° on the Unit Circle. cos 49° ≈ 0.6561. The cosine is the x-coordinate of the point at 49° on the unit circle.
    https://calculat.io/en/number/trigonometry/cos--49/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    46°≈ 0.6947
    47°≈ 0.6820
    48°≈ 0.6691
    49°≈ 0.6561
    50°≈ 0.6428
    51°≈ 0.6293
    52°≈ 0.6157
    Recalculate with different values ↑

    FAQ

    What is cos 49°?

    cos 49° ≈ 0.6561

    Why does cos 49° 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°. 49° is not, so no such exact form exists; the value is used as a decimal: cos 49° ≈ 0.6561.

    Why does a calculator show 0.3006 for cos 49?

    The calculator is in radian mode (RAD): it takes cos 49 as the cosine of 49 radians, cos 49 rad ≈ 0.3006. Switch it to degrees (DEG): cos 49° ≈ 0.6561. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also