Tan 24 Degrees

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

What is tan 24°?

Answer

tan 24° ≈
0.4452

Angle in radians: 24° = 2π/15. The point of the angle is in quadrant I, where tangent is positive.

≈ — rounded to 4 decimal places. An exact form of tan 24° in square roots exists, but it is unwieldy — nested radicals.

tan 24° = sin 24° / cos 24° ≈ 0.4452

xyOP

P(cos 24°, sin 24°) ≈ (0.9135, 0.4067)

T(1, tan 24°) ≈ (1, 0.4452) — where line OP meets the line x = 1.

All four functions of 24°
FunctionExact valueDecimal
sin 24°—≈ 0.4067
cos 24°—≈ 0.9135
tan 24°—≈ 0.4452
cot 24°—≈ 2.2460

See Also

FAQ

What is tan 24°?

tan 24° ≈ 0.4452

Is there an exact value of tan 24°?

Yes: 24° is a multiple of 3°, and the values of such angles can be written with square roots — but the expression is unwieldy, with nested radicals built from the values of 18° and 15° (3° = 18° − 15°). In practice the decimal is used: tan 24° ≈ 0.4452.

Why does a calculator show −2.1349 for tan 24?

The calculator is in radian mode (RAD): it takes tan 24 as the tangent of 24 radians, tan 24 rad ≈ −2.1349. Switch it to degrees (DEG): tan 24° ≈ 0.4452. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.