Tan 106 Degrees

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

What is tan 106°?

Answer

tan 106° ≈
−3.4874

Angle in radians: 106° = 53π/90. The point of the angle is in quadrant II, where tangent is negative.

≈ — rounded to 4 decimal places. tan 106° can't be written with square roots: 106° is not a multiple of 3°.

tan 106° = tan(180° − 74°) = −tan 74° ≈ −3.4874

tan 106° = sin 106° / cos 106° ≈ −3.4874

xyOP

P(cos 106°, sin 106°) ≈ (−0.2756, 0.9613)

T(1, tan 106°) ≈ (1, −3.4874) — where line OP meets the line x = 1, on the extension of the ray beyond O (dashed); T is beyond the drawing, the arrow points to it.

All four functions of 106°
FunctionExact valueDecimal
sin 106°—≈ 0.9613
cos 106°—≈ −0.2756
tan 106°—≈ −3.4874
cot 106°—≈ −0.2867

Reference angle: tan 74° ≈ 3.4874

See Also

FAQ

What is tan 106°?

tan 106° ≈ −3.4874

Why does tan 106° 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°. 106° is not, so no such exact form exists; the value is used as a decimal: tan 106° ≈ −3.4874.

Why does a calculator show −1.0592 for tan 106?

The calculator is in radian mode (RAD): it takes tan 106 as the tangent of 106 radians, tan 106 rad ≈ −1.0592. Switch it to degrees (DEG): tan 106° ≈ −3.4874. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.