Feedback form
Hi! What do you think?

Drag it here or paste with Ctrl+V

    You can also email us on infocalculat.io

    Cos 16 Degrees

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

    What is cos 16°?

    Answer

    cos 16° ≈
    0.9613

    Angle in radians: 16° = 4π/45. The point of the angle is in quadrant I, where cosine is positive.

    ≈ — rounded to 4 decimal places. cos 16° can't be written with square roots: 16° is not a multiple of 3°.

    P(cos 16°, sin 16°) ≈ (0.9613, 0.2756)

    xyOP

    P(cos 16°, sin 16°) ≈ (0.9613, 0.2756)

    Highlighted: the projection on the x-axis — cosine, x ≈ 0.9613.

    All four functions of 16°
    FunctionExact valueDecimal
    sin 16°—≈ 0.2756
    cos 16°—≈ 0.9613
    tan 16°—≈ 0.2867
    cot 16°—≈ 3.4874

    See Also

    Share This Calculation
    Print
    https://calculat.io/en/number/trigonometry/cos--16Copy
    <a href="https://calculat.io/en/number/trigonometry/cos--16">Cos 16 Degrees: Cosine of 16° on the Unit Circle</a>Copy
    Facebook
    Twitter
    Telegram
    WhatsApp
    Viber
    Email
    Cos 16 Degrees: Cosine of 16° on the Unit Circle. cos 16° ≈ 0.9613. The cosine is the x-coordinate of the point at 16° on the unit circle.
    https://calculat.io/en/number/trigonometry/cos--16/generated.jpgCopy

    Cosine of nearby angles

    Anglecos
    13°≈ 0.9744
    14°≈ 0.9703
    15°(√6 + √2)/4
    16°≈ 0.9613
    17°≈ 0.9563
    18°√(10 + 2√5)/4
    19°≈ 0.9455
    Recalculate with different values ↑

    FAQ

    What is cos 16°?

    cos 16° ≈ 0.9613

    Why does cos 16° 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°. 16° is not, so no such exact form exists; the value is used as a decimal: cos 16° ≈ 0.9613.

    Why does a calculator show −0.9577 for cos 16?

    The calculator is in radian mode (RAD): it takes cos 16 as the cosine of 16 radians, cos 16 rad ≈ −0.9577. Switch it to degrees (DEG): cos 16° ≈ 0.9613. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

    See Also