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    Sin 17 Degrees

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

    What is sin 17°?

    Answer

    sin 17° ≈
    0.2924

    Angle in radians: 17° = 17π/180. The point of the angle is in quadrant I, where sine is positive.

    ≈ — rounded to 4 decimal places. sin 17° can't be written with square roots: 17° is not a multiple of 3°.

    P(cos 17°, sin 17°) ≈ (0.9563, 0.2924)

    xyOP

    P(cos 17°, sin 17°) ≈ (0.9563, 0.2924)

    Highlighted: the projection on the y-axis — sine, y ≈ 0.2924.

    All four functions of 17°
    FunctionExact valueDecimal
    sin 17°—≈ 0.2924
    cos 17°—≈ 0.9563
    tan 17°—≈ 0.3057
    cot 17°—≈ 3.2709

    See Also

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    https://calculat.io/en/number/trigonometry/sin--17Copy
    <a href="https://calculat.io/en/number/trigonometry/sin--17">Sin 17 Degrees: Sine of 17° on the Unit Circle - Calculatio</a>Copy
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    Sin 17 Degrees: Sine of 17° on the Unit Circle. sin 17° ≈ 0.2924. The sine is the y-coordinate of the point at 17° on the unit circle.
    https://calculat.io/en/number/trigonometry/sin--17/generated.jpgCopy

    Sine of nearby angles

    Anglesin
    14°≈ 0.2419
    15°(√6 − √2)/4
    16°≈ 0.2756
    17°≈ 0.2924
    18°(√5 − 1)/4
    19°≈ 0.3256
    20°≈ 0.3420
    Recalculate with different values ↑

    FAQ

    What is sin 17°?

    sin 17° ≈ 0.2924

    Why does sin 17° 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°. 17° is not, so no such exact form exists; the value is used as a decimal: sin 17° ≈ 0.2924.

    Why does a calculator show −0.9614 for sin 17?

    The calculator is in radian mode (RAD): it takes sin 17 as the sine of 17 radians, sin 17 rad ≈ −0.9614. Switch it to degrees (DEG): sin 17° ≈ 0.2924. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also