Arctan of 0.3

Arcsin, Arccos, Arctan, Arccot
Function
x

What is arctan(0.3)?

Answer

arctan(0.3) ≈
16.6992° ≈ 0.2915 rad

Range: arctan x is an angle strictly between −90° and 90°, so the answer is unique.

≈ — the value is not a table one; rounded to 4 decimal places.

arctan(0.3) is the angle α in (−90°, 90°) with tan α = 0.3.

tan 16.6992° ≈ 0.3000

xyOP

α = arctan(0.3) ≈ 16.6992°

P ≈ (0.9578, 0.2873)

T(1, 0.3) is where line OP meets the line x = 1; highlighted: tan α = 0.3.

All four inverse functions of 0.3
FunctionDegreesRadians
arcsin(0.3)≈ 17.4576°≈ 0.3047
arccos(0.3)≈ 72.5424°≈ 1.2661
arctan(0.3)≈ 16.6992°≈ 0.2915
arccot(0.3)≈ 73.3008°≈ 1.2793

See Also

FAQ

What is arctan(0.3)?

arctan(0.3) ≈ 16.6992° ≈ 0.2915 rad

How to convert arctan(0.3) to radians?

Multiply the angle in degrees by π/180: 16.6992° × π/180 ≈ 0.2915 rad.

Why does a calculator show 0.2915 for arctan(0.3)?

The calculator is in radian mode (RAD) and gives the angle in radians: arctan(0.3) ≈ 0.2915 rad. In degrees (DEG) it is ≈ 16.6992°.