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    Sin 43 Degrees

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

    What is sin 43°?

    Answer

    sin 43° ≈
    0.6820

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

    ≈ — rounded to 4 decimal places. sin 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 y-axis — sine, y ≈ 0.6820.

    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/sin--43Copy
    <a href="https://calculat.io/en/number/trigonometry/sin--43">Sin 43 Degrees: Sine of 43° on the Unit Circle - Calculatio</a>Copy
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    Sin 43 Degrees: Sine of 43° on the Unit Circle. sin 43° ≈ 0.6820. The sine is the y-coordinate of the point at 43° on the unit circle.
    https://calculat.io/en/number/trigonometry/sin--43/generated.jpgCopy

    Sine of nearby angles

    Anglesin
    40°≈ 0.6428
    41°≈ 0.6561
    42°≈ 0.6691
    43°≈ 0.6820
    44°≈ 0.6947
    45°√2/2
    46°≈ 0.7193
    Recalculate with different values ↑

    FAQ

    What is sin 43°?

    sin 43° ≈ 0.6820

    Why does sin 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: sin 43° ≈ 0.6820.

    Why does a calculator show −0.8318 for sin 43?

    The calculator is in radian mode (RAD): it takes sin 43 as the sine of 43 radians, sin 43 rad ≈ −0.8318. Switch it to degrees (DEG): sin 43° ≈ 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