Trigonometric functions are often used in embedded systems. Motor drivecontrol applications such as the Park Transform, Clarke Transform, andPWMgeneration use trigonometric functions extensively.

We study random exponential sums of the form $\sum_{k=1}^{n}X_{k}\,{\rm exp}\{i(\lambda _{k}^{(1)}t_{1}+\cdots +\lambda _{k}^{(s)}t_{s})\}$, where $\{X_{n}\}$ is a ...

We consider a method of estimating an unknown regression curve by regression on a combination of low-order polynomial terms and trigonometric terms. Estimation based on trigonometric functions alone ...

Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles. Trigonometry is found all throughout geometry, as every straight-sided shape may be broken ...