Cos 63 Degrees
Sin, Cos, Tan, Cot of an Angle
What is cos 63°?
Answer
cos 63° ≈
0.4540
Angle in radians: 63° = 7π/20. The point of the angle is in quadrant I, where cosine is positive.
≈ — rounded to 4 decimal places. An exact form of cos 63° in square roots exists, but it is unwieldy — nested radicals.
P(cos 63°, sin 63°) ≈ (0.4540, 0.8910)
P(cos 63°, sin 63°) ≈ (0.4540, 0.8910)
Highlighted: the projection on the x-axis — cosine, x ≈ 0.4540.
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 63°?
cos 63° ≈ 0.4540
Is there an exact value of cos 63°?
Yes: 63° is a multiple of 3°, and the values of such angles can be written with square roots — but the expression is unwieldy, with nested radicals built from the values of 18° and 15° (3° = 18° − 15°). In practice the decimal is used: cos 63° ≈ 0.4540.
Why does a calculator show 0.9859 for cos 63?
The calculator is in radian mode (RAD): it takes cos 63 as the cosine of 63 radians, cos 63 rad ≈ 0.9859. Switch it to degrees (DEG): cos 63° ≈ 0.4540. 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 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
- Cos 58 Degrees: Cosine of 58° on the Unit Circle
- Cos 59 Degrees: Cosine of 59° on the Unit Circle
- Cos 60 Degrees: Cosine of 60° on the Unit Circle
- Cos 61 Degrees: Cosine of 61° on the Unit Circle
- Cos 62 Degrees: Cosine of 62° 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 73 Degrees: Cosine of 73° on the Unit Circle
- Косинус 63 градусов (cos 63°) на единичной окружности
- Coseno de 63 grados (cos 63°) en el círculo unitario
- Cosseno de 63 graus (cos 63°) no ciclo trigonométrico