Cot 86 Degrees

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

What is cot 86°?

Answer

cot 86° ≈
0.0699

Angle in radians: 86° = 43π/90. The point of the angle is in quadrant I, where cotangent is positive.

≈ — rounded to 4 decimal places. cot 86° can't be written with square roots: 86° is not a multiple of 3°.

cot 86° = cos 86° / sin 86° ≈ 0.0699

xyOP

P(cos 86°, sin 86°) ≈ (0.0698, 0.9976)

C(cot 86°, 1) ≈ (0.0699, 1) — where line OP meets the line y = 1.

All four functions of 86°
FunctionExact valueDecimal
sin 86°—≈ 0.9976
cos 86°—≈ 0.0698
tan 86°—≈ 14.3007
cot 86°—≈ 0.0699

See Also

FAQ

What is cot 86°?

cot 86° ≈ 0.0699

Why does cot 86° 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°. 86° is not, so no such exact form exists; the value is used as a decimal: cot 86° ≈ 0.0699.

Why does a calculator show 0.4155 for cot 86?

The calculator is in radian mode (RAD): it takes cot 86 as the cotangent of 86 radians, cot 86 rad ≈ 0.4155. Switch it to degrees (DEG): cot 86° ≈ 0.0699. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.