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    Sin 211 Degrees

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

    What is sin 211°?

    Answer

    sin 211° ≈
    −0.5150

    Angle in radians: 211° = 211π/180. The point of the angle is in quadrant III, where sine is negative.

    ≈ — rounded to 4 decimal places. sin 211° can't be written with square roots: 211° is not a multiple of 3°.

    sin 211° = sin(180° + 31°) = −sin 31° ≈ −0.5150

    P(cos 211°, sin 211°) ≈ (−0.8572, −0.5150)

    xyOP

    P(cos 211°, sin 211°) ≈ (−0.8572, −0.5150)

    Highlighted: the projection on the y-axis — sine, y ≈ −0.5150.

    All four functions of 211°
    FunctionExact valueDecimal
    sin 211°—≈ −0.5150
    cos 211°—≈ −0.8572
    tan 211°—≈ 0.6009
    cot 211°—≈ 1.6643

    Reference angle: sin 31° ≈ 0.5150

    See Also

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    https://calculat.io/en/number/trigonometry/sin--211Copy
    <a href="https://calculat.io/en/number/trigonometry/sin--211">Sin 211 Degrees: Sine of 211° on the Unit Circle</a>Copy
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    Sin 211 Degrees: Sine of 211° on the Unit Circle. sin 211° ≈ −0.5150. The sine is the y-coordinate of the point at 211° on the unit circle; 211° reduces to 31°.
    https://calculat.io/en/number/trigonometry/sin--211/generated.jpgCopy

    Sine of nearby angles

    Anglesin
    198°−(√5 − 1)/4
    200°≈ −0.3420
    210°−1/2
    211°≈ −0.5150
    215°≈ −0.5736
    216°−√(10 − 2√5)/4
    225°−√2/2
    Recalculate with different values ↑

    FAQ

    What is sin 211°?

    sin 211° ≈ −0.5150

    Why does sin 211° 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°. 211° is not, so no such exact form exists; the value is used as a decimal: sin 211° ≈ −0.5150.

    Why does a calculator show −0.4910 for sin 211?

    The calculator is in radian mode (RAD): it takes sin 211 as the sine of 211 radians, sin 211 rad ≈ −0.4910. Switch it to degrees (DEG): sin 211° ≈ −0.5150. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also