Constant std::f32::consts::FRAC_PI_6
pub const FRAC_PI_6: f32 = 0.52359877559829887307710723054658381_f32; // 0.52359879f32π/6
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Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/f32/consts/constant.FRAC_PI_6.html