弦: bowstring; string the string ...定理: theorem馀弦定律: cosine law; law of cosines弦定理: law of cosines照度馀弦定律: cosine law of illumination余弦定理: cosine theorem; law of cosines正弦定理: law of sines; sine rule; sine theorem边的余弦定理: cosine law for sides; cosine theorem of sides角的余弦定理: cosine theorem of angle馀弦: cosine反馀弦: acos弦定义: chord definition方向馀弦: direction cosine双曲馀弦: cosh馀弦公式: the cosine formula馀弦函数: cosine定理: (已经证明正确,可以作为原则或规律的命题或公式) theorem 基本定理 fundamental theorem; 几何定理 geometrical theorems; 定理验证[明] theorem proving 反正弦定律: arc sine law; arc-sine law余弦定律: cosine law; cosine rule; cosinussatz law of cosines; cosines law; low of cosines正弦定律: law of sines; sine law; sinusioidal law; sinusoidal law离散馀弦变换: dct: discrete cosine transform; discrete cosine transform，dct离散馀弦转换: dct阿贝正弦定则: abbe's sine rule; abbe's sine rule郎伯余弦定律: lambert's cosine law朗伯余弦定律: lambert'scosinelaw; lamberts cosine law
