Cot 64 Degrees

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

What is cot 64°?

Answer

cot 64° ≈
0.4877

Angle in radians: 64° = 16π/45. The point of the angle is in quadrant I, where cotangent is positive.

≈ — rounded to 4 decimal places. cot 64° can't be written with square roots: 64° is not a multiple of 3°.

cot 64° = cos 64° / sin 64° ≈ 0.4877

xyOP

P(cos 64°, sin 64°) ≈ (0.4384, 0.8988)

C(cot 64°, 1) ≈ (0.4877, 1) — where line OP meets the line y = 1.

All four functions of 64°
FunctionExact valueDecimal
sin 64°—≈ 0.8988
cos 64°—≈ 0.4384
tan 64°—≈ 2.0503
cot 64°—≈ 0.4877

See Also

FAQ

What is cot 64°?

cot 64° ≈ 0.4877

Why does cot 64° 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°. 64° is not, so no such exact form exists; the value is used as a decimal: cot 64° ≈ 0.4877.

Why does a calculator show 0.4259 for cot 64?

The calculator is in radian mode (RAD): it takes cot 64 as the cotangent of 64 radians, cot 64 rad ≈ 0.4259. Switch it to degrees (DEG): cot 64° ≈ 0.4877. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.