How to Convert Latitude to Radians
Latitudes are imaginary lines that run east and west along the Earth which are used to measure the north-south distances from the North Pole to the South Pole. However, because of the rotund nature of the planet, measuring distances with lines of latitude sometimes gets complicated and you must use radians, which are essentially straight lines over round surfaces.
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Instructions
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Take the latitude measurements in degrees. (In our example, the two ends of the radian are on exactly the same longitude.)
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Radians are measured by dividing the magical mathematical number Pi (3.14159 ...) by 180, which is the plane of a circle. This will give you roughly 0.01745327 radians.
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Take the amount of radians and multiply it by the amount of degrees from your latitude. For example, a latitude that is 28 degrees will be equivalent to 28 * pi / 180 which equals 0.4886917 radians.
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