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    Cos 43 Degrees

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

    What is cos 43°?

    Answer

    cos 43° ≈
    0.7314

    Angle in radians: 43° = 43π/180. The point of the angle is in quadrant I, where cosine is positive.

    ≈ — rounded to 4 decimal places. cos 43° can't be written with square roots: 43° is not a multiple of 3°.

    P(cos 43°, sin 43°) ≈ (0.7314, 0.6820)

    xyOP

    P(cos 43°, sin 43°) ≈ (0.7314, 0.6820)

    Highlighted: the projection on the x-axis — cosine, x ≈ 0.7314.

    All four functions of 43°
    FunctionExact valueDecimal
    sin 43°—≈ 0.6820
    cos 43°—≈ 0.7314
    tan 43°—≈ 0.9325
    cot 43°—≈ 1.0724

    See Also

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    https://calculat.io/en/number/trigonometry/cos--43Copy
    <a href="https://calculat.io/en/number/trigonometry/cos--43">Cos 43 Degrees: Cosine of 43° on the Unit Circle</a>Copy
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    Cos 43 Degrees: Cosine of 43° on the Unit Circle. cos 43° ≈ 0.7314. The cosine is the x-coordinate of the point at 43° on the unit circle.
    https://calculat.io/en/number/trigonometry/cos--43/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    40°≈ 0.7660
    41°≈ 0.7547
    42°≈ 0.7431
    43°≈ 0.7314
    44°≈ 0.7193
    45°√2/2
    46°≈ 0.6947
    Recalculate with different values ↑

    FAQ

    What is cos 43°?

    cos 43° ≈ 0.7314

    Why does cos 43° 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°. 43° is not, so no such exact form exists; the value is used as a decimal: cos 43° ≈ 0.7314.

    Why does a calculator show 0.5551 for cos 43?

    The calculator is in radian mode (RAD): it takes cos 43 as the cosine of 43 radians, cos 43 rad ≈ 0.5551. Switch it to degrees (DEG): cos 43° ≈ 0.7314. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also