Cot 125 Degrees

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

What is cot 125°?

Answer

cot 125° ≈
−0.7002

Angle in radians: 125° = 25π/36. The point of the angle is in quadrant II, where cotangent is negative.

≈ — rounded to 4 decimal places. cot 125° can't be written with square roots: 125° is not a multiple of 3°.

cot 125° = cot(180° − 55°) = −cot 55° ≈ −0.7002

cot 125° = cos 125° / sin 125° ≈ −0.7002

xyOP

P(cos 125°, sin 125°) ≈ (−0.5736, 0.8192)

C(cot 125°, 1) ≈ (−0.7002, 1) — where line OP meets the line y = 1.

All four functions of 125°
FunctionExact valueDecimal
sin 125°—≈ 0.8192
cos 125°—≈ −0.5736
tan 125°—≈ −1.4281
cot 125°—≈ −0.7002

Reference angle: cot 55° ≈ 0.7002

See Also

Recalculate with different values ↑

Cotangent of nearby angles

Anglecot
108°−√(25 − 10√5)/5
110°≈ −0.3640
120°−√3/3
125°≈ −0.7002
126°−√(5 − 2√5)
127°≈ −0.7536
130°≈ −0.8391

FAQ

What is cot 125°?

cot 125° ≈ −0.7002

Why does cot 125° 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°. 125° is not, so no such exact form exists; the value is used as a decimal: cot 125° ≈ −0.7002.

Why does a calculator show −1.2787 for cot 125?

The calculator is in radian mode (RAD): it takes cot 125 as the cotangent of 125 radians, cot 125 rad ≈ −1.2787. Switch it to degrees (DEG): cot 125° ≈ −0.7002. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

See Also