Cot 85 Degrees

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

What is cot 85°?

Answer

cot 85° ≈
0.0875

Angle in radians: 85° = 17π/36. The point of the angle is in quadrant I, where cotangent is positive.

≈ — rounded to 4 decimal places. cot 85° can't be written with square roots: 85° is not a multiple of 3°.

cot 85° = cos 85° / sin 85° ≈ 0.0875

xyOP

P(cos 85°, sin 85°) ≈ (0.0872, 0.9962)

C(cot 85°, 1) ≈ (0.0875, 1) — where line OP meets the line y = 1.

All four functions of 85°
FunctionExact valueDecimal
sin 85°—≈ 0.9962
cos 85°—≈ 0.0872
tan 85°—≈ 11.4301
cot 85°—≈ 0.0875

See Also

Recalculate with different values ↑

Cotangent of nearby angles

Anglecot
82°≈ 0.1405
83°≈ 0.1228
84°≈ 0.1051
85°≈ 0.0875
86°≈ 0.0699
87°≈ 0.0524
88°≈ 0.0349

FAQ

What is cot 85°?

cot 85° ≈ 0.0875

Why does cot 85° 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°. 85° is not, so no such exact form exists; the value is used as a decimal: cot 85° ≈ 0.0875.

Why does a calculator show 5.5906 for cot 85?

The calculator is in radian mode (RAD): it takes cot 85 as the cotangent of 85 radians, cot 85 rad ≈ 5.5906. Switch it to degrees (DEG): cot 85° ≈ 0.0875. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

See Also