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Radian

Conversions to other units

Conversions from other units

Physical quantities

plane angle

bearing

Unit type

SI derived: m m^(-1) (meter meter^(-1))

Common prefix forms

Unit system

in effect treated as quantity with unit one in SI

Basic unit dimensions

[angle]

Corresponding quantities for 1 rad

Rotation count N from N = φ/(2π):
| 0.1592 rot (rotations)

Slope percentage from [slope percentage] = 100% × tan(θ):
| 155.7 slope% (slope percent)

Electric loss factor d from δ = tan^(-1)(d):
| 1.557

Quality factor Q from δd = tan^(-1)(1/Q):
| 0.6421

Comparisons for 1 rad as plane angle

≈ ( 0.16 ≈ 1/6 ) × full angle ( 2 π rad )

≈ 2.4 × tilt of the earth's axis relative to its orbital plane ( 23.45° )

Comparison for 1 rad as angular elongation

≈ 1.2 × maximum elongation of Venus ( 45 to 47° )

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