- 正弦波 zhèngxiánbō sine wavesine wave; simple harmonic vibration; sinusoidal wave
- 双曲正弦 shuāngqūzhèngxián hyperbolic sinehyperbolic sine or sinh in mathematics
- 双曲线正弦 shuāngqūxiànzhèngxián hyperbolic sinehyperbolic sine; the mathematical function sinh
- 正弦定理 zhèngxiándìnglǐ law of sinesthe law of sines in trigonometry
- 正弦形 zhèngxiánxíng sinusoidalshaped like a sine wave
