，向量场正规形式- trigonal residue
- trigonal system
- trigonometric addition formula
- trigonometrical form of complex number
- trigonometrically conjugate functions
- trigonometric angle
- trigonometric approximation
- trigonometric approximation polynomial
- trigonometric convexity
- trigonometric degree of accuracy
- trigonometric equation
- trigonometric form
- trigonometric Fourier series
- trigonometric function
- trigonometric function interpolation
- trigonometric function line
- trigonometric identity
- trigonometric inequality
- trigonometric integral
- trigonometric interpolation
- trigonometric interpolation polynomial
- trigonometric measurement
- trigonometric moment
- trigonometric moment problem
- trigonometric polynomial