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    Cos 7 Degrees

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

    What is cos 7°?

    Answer

    cos 7° ≈
    0.9925

    Angle in radians: 7° = 7π/180. The point of the angle is in quadrant I, where cosine is positive.

    ≈ — rounded to 4 decimal places. cos 7° can't be written with square roots: 7° is not a multiple of 3°.

    P(cos 7°, sin 7°) ≈ (0.9925, 0.1219)

    xyOP

    P(cos 7°, sin 7°) ≈ (0.9925, 0.1219)

    Highlighted: the projection on the x-axis — cosine, x ≈ 0.9925.

    All four functions of 7°
    FunctionExact valueDecimal
    sin 7°—≈ 0.1219
    cos 7°—≈ 0.9925
    tan 7°—≈ 0.1228
    cot 7°—≈ 8.1443

    See Also

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    <a href="https://calculat.io/en/number/trigonometry/cos--7">Cos 7 Degrees: Cosine of 7° on the Unit Circle - Calculatio</a>Copy
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    Cos 7 Degrees: Cosine of 7° on the Unit Circle. cos 7° ≈ 0.9925. The cosine is the x-coordinate of the point at 7° on the unit circle.
    https://calculat.io/en/number/trigonometry/cos--7/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    4°≈ 0.9976
    5°≈ 0.9962
    6°≈ 0.9945
    7°≈ 0.9925
    8°≈ 0.9903
    9°≈ 0.9877
    10°≈ 0.9848
    Recalculate with different values ↑

    FAQ

    What is cos 7°?

    cos 7° ≈ 0.9925

    Why does cos 7° 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°. 7° is not, so no such exact form exists; the value is used as a decimal: cos 7° ≈ 0.9925.

    Why does a calculator show 0.7539 for cos 7?

    The calculator is in radian mode (RAD): it takes cos 7 as the cosine of 7 radians, cos 7 rad ≈ 0.7539. Switch it to degrees (DEG): cos 7° ≈ 0.9925. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also