Cos 47 Degrees
Sin, Cos, Tan, Cot of an Angle
What is cos 47°?
Answer
cos 47° ≈
0.6820
Angle in radians: 47° = 47π/180. The point of the angle is in quadrant I, where cosine is positive.
≈ — rounded to 4 decimal places. cos 47° can't be written with square roots: 47° is not a multiple of 3°.
P(cos 47°, sin 47°) ≈ (0.6820, 0.7314)
P(cos 47°, sin 47°) ≈ (0.6820, 0.7314)
Highlighted: the projection on the x-axis — cosine, x ≈ 0.6820.
See Also
- Arcsin, Arccos, Arctan, Arccot - The angle from the value of its sine, cosine, tangent or cotangent: exact in degrees and π, with the check and the unit circle
- Square Root Calculator - Calculate the square root of any number
- Simplify Square Root Calculator - Write any square root in simplest radical form, step by step
- Geometry Formulas: Area, Volume, Perimeter - The formula for every standard shape, where it comes from, and worked examples
Cosine of nearby angles
FAQ
What is cos 47°?
cos 47° ≈ 0.6820
Why does cos 47° 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°. 47° is not, so no such exact form exists; the value is used as a decimal: cos 47° ≈ 0.6820.
Why does a calculator show −0.9923 for cos 47?
The calculator is in radian mode (RAD): it takes cos 47 as the cosine of 47 radians, cos 47 rad ≈ −0.9923. Switch it to degrees (DEG): cos 47° ≈ 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
- Cos 37 Degrees: Cosine of 37° on the Unit Circle
- Cos 38 Degrees: Cosine of 38° on the Unit Circle
- Cos 39 Degrees: Cosine of 39° on the Unit Circle
- Cos 40 Degrees: Cosine of 40° on the Unit Circle
- Cos 41 Degrees: Cosine of 41° on the Unit Circle
- Cos 42 Degrees: Cosine of 42° on the Unit Circle
- Cos 43 Degrees: Cosine of 43° on the Unit Circle
- Cos 44 Degrees: Cosine of 44° on the Unit Circle
- Cos 45 Degrees: Cosine of 45° on the Unit Circle
- Cos 46 Degrees: Cosine of 46° on the Unit Circle
- Cos 48 Degrees: Cosine of 48° on the Unit Circle
- Cos 49 Degrees: Cosine of 49° on the Unit Circle
- Cos 50 Degrees: Cosine of 50° on the Unit Circle
- Cos 51 Degrees: Cosine of 51° on the Unit Circle
- Cos 52 Degrees: Cosine of 52° on the Unit Circle
- Cos 53 Degrees: Cosine of 53° on the Unit Circle
- Cos 54 Degrees: Cosine of 54° on the Unit Circle
- Cos 55 Degrees: Cosine of 55° on the Unit Circle
- Cos 56 Degrees: Cosine of 56° on the Unit Circle
- Cos 57 Degrees: Cosine of 57° on the Unit Circle
- Косинус 47 градусов (cos 47°) на единичной окружности
- Coseno de 47 grados (cos 47°) en el círculo unitario
- Cosseno de 47 graus (cos 47°) no ciclo trigonométrico