Cos 73 Degrees
Sin, Cos, Tan, Cot of an Angle
What is cos 73°?
Answer
cos 73° ≈
0.2924
Angle in radians: 73° = 73π/180. The point of the angle is in quadrant I, where cosine is positive.
≈ — rounded to 4 decimal places. cos 73° can't be written with square roots: 73° is not a multiple of 3°.
P(cos 73°, sin 73°) ≈ (0.2924, 0.9563)
P(cos 73°, sin 73°) ≈ (0.2924, 0.9563)
Highlighted: the projection on the x-axis — cosine, x ≈ 0.2924.
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 73°?
cos 73° ≈ 0.2924
Why does cos 73° 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°. 73° is not, so no such exact form exists; the value is used as a decimal: cos 73° ≈ 0.2924.
Why does a calculator show −0.7362 for cos 73?
The calculator is in radian mode (RAD): it takes cos 73 as the cosine of 73 radians, cos 73 rad ≈ −0.7362. Switch it to degrees (DEG): cos 73° ≈ 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
- Cos 63 Degrees: Cosine of 63° on the Unit Circle
- Cos 64 Degrees: Cosine of 64° on the Unit Circle
- Cos 65 Degrees: Cosine of 65° on the Unit Circle
- Cos 66 Degrees: Cosine of 66° on the Unit Circle
- Cos 67 Degrees: Cosine of 67° on the Unit Circle
- Cos 68 Degrees: Cosine of 68° on the Unit Circle
- Cos 69 Degrees: Cosine of 69° on the Unit Circle
- Cos 70 Degrees: Cosine of 70° on the Unit Circle
- Cos 71 Degrees: Cosine of 71° on the Unit Circle
- Cos 72 Degrees: Cosine of 72° on the Unit Circle
- Cos 74 Degrees: Cosine of 74° on the Unit Circle
- Cos 75 Degrees: Cosine of 75° on the Unit Circle
- Cos 76 Degrees: Cosine of 76° on the Unit Circle
- Cos 77 Degrees: Cosine of 77° on the Unit Circle
- Cos 78 Degrees: Cosine of 78° on the Unit Circle
- Cos 79 Degrees: Cosine of 79° on the Unit Circle
- Cos 80 Degrees: Cosine of 80° on the Unit Circle
- Cos 81 Degrees: Cosine of 81° on the Unit Circle
- Cos 82 Degrees: Cosine of 82° on the Unit Circle
- Cos 83 Degrees: Cosine of 83° on the Unit Circle
- Косинус 73 градусов (cos 73°) на единичной окружности
- Coseno de 73 grados (cos 73°) en el círculo unitario
- Cosseno de 73 graus (cos 73°) no ciclo trigonométrico