
In six months the Earth moves around the Sun from 1 to 2. is small so we can use the approximation
is small so we can use the approximation where 1 Astronomical Unit=150 million km, the distance from the Earth to the Sun, and
where 1 Astronomical Unit=150 million km, the distance from the Earth to the Sun, and is in radians.
is in radians.
Example


In six months the Earth moves around the Sun from 1 to 2. is small so we can use the approximation
is small so we can use the approximation where 1 Astronomical Unit=150 million km, the distance from the Earth to the Sun, and
where 1 Astronomical Unit=150 million km, the distance from the Earth to the Sun, and is in radians.
is in radians.
Example
