Cos 83 Degrees

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

What is cos 83°?

Answer

cos 83° ≈
0.1219

Angle in radians: 83° = 83π/180. The point of the angle is in quadrant I, where cosine is positive.

≈ — rounded to 4 decimal places. cos 83° can't be written with square roots: 83° is not a multiple of 3°.

P(cos 83°, sin 83°) ≈ (0.1219, 0.9925)

xyOP

P(cos 83°, sin 83°) ≈ (0.1219, 0.9925)

Highlighted: the projection on the x-axis — cosine, x ≈ 0.1219.

All four functions of 83°
FunctionExact valueDecimal
sin 83°—≈ 0.9925
cos 83°—≈ 0.1219
tan 83°—≈ 8.1443
cot 83°—≈ 0.1228

See Also

Recalculate with different values ↑

Cosine of nearby angles

Anglecos
80°≈ 0.1736
81°≈ 0.1564
82°≈ 0.1392
83°≈ 0.1219
84°≈ 0.1045
85°≈ 0.0872
86°≈ 0.0698

FAQ

What is cos 83°?

cos 83° ≈ 0.1219

Why does cos 83° 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°. 83° is not, so no such exact form exists; the value is used as a decimal: cos 83° ≈ 0.1219.

Why does a calculator show 0.2495 for cos 83?

The calculator is in radian mode (RAD): it takes cos 83 as the cosine of 83 radians, cos 83 rad ≈ 0.2495. Switch it to degrees (DEG): cos 83° ≈ 0.1219. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

See Also