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km2rad

Convert spherical distance from kilometers to radians

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Syntax

rad = km2rad(km)
rad = km2rad(km,radius)
rad = km2rad(公里,主任e)

Description

rad= km2rad(km)converts distances from kilometers to radians, as measured along a great circle on a sphere with a radius of 6371 km, the mean radius of the Earth.

rad= km2rad(km,radius)converts distances from kilometers to radians, as measured along a great circle on a sphere having the specifiedradius.

rad= km2rad(km,sphere)converts distances from kilometers to radians, as measured along a great circle on a sphere approximating an object in the Solar System.

Examples

Convert Kilometers to Radians

How many radians does 1,000 km span on the Earth and on the Moon?

rad = km2rad(1000)
rad = 0.1570
rad = km2rad(1000,'moon')
rad = 0.5754

Input Arguments

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Distance in kilometers, specified as a numeric array.

Data Types:single|double

Radius of sphere in units of kilometers, specified as a numeric scalar.

Sphere approximating an object in the Solar System, specified as one of the following values:'sun','moon','mercury',“金星”,'earth','mars','jupiter','saturn','uranus','neptune', or'pluto'. The value ofsphereis case-insensitive.

Output Arguments

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Distance in radians, returned as a numeric array.

Data Types:single|double

Version History

Introduced in R2007a

See Also

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