Cot 70 Degrees

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

What is cot 70°?

Answer

cot 70° ≈
0.3640

Angle in radians: 70° = 7π/18. The point of the angle is in quadrant I, where cotangent is positive.

≈ — rounded to 4 decimal places. cot 70° can't be written with square roots: 70° is not a multiple of 3°.

cot 70° = cos 70° / sin 70° ≈ 0.3640

xyOP

P(cos 70°, sin 70°) ≈ (0.3420, 0.9397)

C(cot 70°, 1) ≈ (0.3640, 1) — where line OP meets the line y = 1.

All four functions of 70°
FunctionExact valueDecimal
sin 70°—≈ 0.9397
cos 70°—≈ 0.3420
tan 70°—≈ 2.7475
cot 70°—≈ 0.3640

See Also

FAQ

What is cot 70°?

cot 70° ≈ 0.3640

Why does cot 70° 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°. 70° is not, so no such exact form exists; the value is used as a decimal: cot 70° ≈ 0.3640.

Why does a calculator show 0.8184 for cot 70?

The calculator is in radian mode (RAD): it takes cot 70 as the cotangent of 70 radians, cot 70 rad ≈ 0.8184. Switch it to degrees (DEG): cot 70° ≈ 0.3640. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.