Expressing the normal vector (Yataka) and others using classical trigonometric functions
Author: darknExecutions: 494
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| sin(θ) | Sine |
| cos(θ) | Cosine |
| tan(θ) | Tangent |
| csc(θ) = 1/sin(θ) | Reciprocal |
| sec(θ) = 1/cos(θ) | Reciprocal |
| cot(θ) = 1/tan(θ) | Arcsine |
| versin(θ) = 1 - cos(θ) | Masaya (Ya, Yataka) |
| vercos(θ) = 1 + cos(θ) | |
| cvs(θ) = 1 - sin(θ) | Yoya |
| covercos(θ) |
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Older trigonometric terms, such as “正矢,” are also used in forms like “矢高.”