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    Sin 19 Degrees

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

    What is sin 19°?

    Answer

    sin 19° ≈
    0.3256

    Angle in radians: 19° = 19π/180. The point of the angle is in quadrant I, where sine is positive.

    ≈ — rounded to 4 decimal places. sin 19° can't be written with square roots: 19° is not a multiple of 3°.

    P(cos 19°, sin 19°) ≈ (0.9455, 0.3256)

    xyOP

    P(cos 19°, sin 19°) ≈ (0.9455, 0.3256)

    Highlighted: the projection on the y-axis — sine, y ≈ 0.3256.

    All four functions of 19°
    FunctionExact valueDecimal
    sin 19°—≈ 0.3256
    cos 19°—≈ 0.9455
    tan 19°—≈ 0.3443
    cot 19°—≈ 2.9042

    See Also

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    https://calculat.io/en/number/trigonometry/sin--19Copy
    <a href="https://calculat.io/en/number/trigonometry/sin--19">Sin 19 Degrees: Sine of 19° on the Unit Circle - Calculatio</a>Copy
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    Sin 19 Degrees: Sine of 19° on the Unit Circle. sin 19° ≈ 0.3256. The sine is the y-coordinate of the point at 19° on the unit circle.
    https://calculat.io/en/number/trigonometry/sin--19/generated.jpgCopy

    Sine of nearby angles

    Anglesin
    16°≈ 0.2756
    17°≈ 0.2924
    18°(√5 − 1)/4
    19°≈ 0.3256
    20°≈ 0.3420
    21°≈ 0.3584
    22°≈ 0.3746
    Recalculate with different values ↑

    FAQ

    What is sin 19°?

    sin 19° ≈ 0.3256

    Why does sin 19° 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°. 19° is not, so no such exact form exists; the value is used as a decimal: sin 19° ≈ 0.3256.

    Why does a calculator show 0.1499 for sin 19?

    The calculator is in radian mode (RAD): it takes sin 19 as the sine of 19 radians, sin 19 rad ≈ 0.1499. Switch it to degrees (DEG): sin 19° ≈ 0.3256. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also