Comments on: Intuitive Guide to Angles, Degrees and Radians https://betterexplained.com/articles/intuitive-guide-to-angles-degrees-and-radians/ Math lessons that click Mon, 16 Aug 2021 07:42:49 +0000 hourly 1 By: How to use the numbers from Game Rotation Vector in Android? - Tutorial Guruji https://betterexplained.com/articles/intuitive-guide-to-angles-degrees-and-radians/#comment-395509 Mon, 16 Aug 2021 07:42:49 +0000 http://betterexplained.com/articles/intuitive-guide-to-angles-degrees-and-radians/#comment-395509 […] with angles, especially in 3D, we generally use radians, not degrees, so theta is in radians. This looks like a good introductory […]

]]> By: kalid https://betterexplained.com/articles/intuitive-guide-to-angles-degrees-and-radians/#comment-568045 Mon, 01 Feb 2021 18:01:44 +0000 http://betterexplained.com/articles/intuitive-guide-to-angles-degrees-and-radians/#comment-568045 In reply to Anand Ghurye.

Hi Anand, yes, that calculation is correct for the bus going 2000 degrees per second:

2000 degrees per second = 2000 / 360 = 5.56 rotations per second

Each rotation goes 2 * pi * r = 2 * 3.14 * 2 meters = 12.56 meters per rotation

Final speed = 12.56 * 5.56 = 69.8 meters per second

Notice we needed a conversion from degrees/sec to rotations/sec, another conversion from rotation to distance, and we multiply them together.

For the car (different vehicle), we were given 6 radians per second rotational speed, and a 2 meter wheel radius. The speed is calculated via: 6 radians/sec * 2 meter radius = 12 meters/sec.

We don't need any conversions, we simply multiply the rotational speed by the radius. The main goal was showing how much simpler the calculation is when dealing with radians.

]]> By: Anand Ghurye https://betterexplained.com/articles/intuitive-guide-to-angles-degrees-and-radians/#comment-568044 Sat, 30 Jan 2021 09:53:30 +0000 http://betterexplained.com/articles/intuitive-guide-to-angles-degrees-and-radians/#comment-568044 Very nice way of explanation. Your monster tire example makes the utility amply clear. One question. 2000 degrees equals 5.56 rotations per second. 2*2*3.14*5.56 = 69.83 m am I missing something ?

]]> By: A Programmer’s Instinct for Matrix Multiplication – BetterExplained - clup-e Review https://betterexplained.com/articles/intuitive-guide-to-angles-degrees-and-radians/#comment-390965 Sat, 19 Dec 2020 12:44:58 +0000 http://betterexplained.com/articles/intuitive-guide-to-angles-degrees-and-radians/#comment-390965 […] Intuitive Guide to Angles, Degrees and Radians […]

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