Learning with TOI News: Trigonometric identities are powerful tools for simplifying complex equations in math and science. Three core groups—reciprocal, quotient, and Pythago ...

Despite that, virtually every modern car now comes with a touchscreen display, and a significant proportion hide most or all of the car's basic functions within touchscreen menus.

FORT SILL, Okla. — In an inspiring display of dedication, resilience and family commitment, a mother and daughter graduated side by side from U.S. Army Basic Combat Training at Fort Sill in late ...

This article was originally published with the title “A Simple Rule for Certain Trigonometric Identities” in SA Supplements Vol. 75 No. 1950supp (May 1913), p. 315 doi:10.1038 ...

Health & Fitness Smartwatches 11 insights that prove Garmin has no right to charge for its AI subscription feature Features By Stephen Warwick last updated April 7, 2025 ...

Derrick Johnson, the president and CEO of the NAACP, said he believes President Trump is “deliberately dismantling the basic functions” of U.S. democracy. In a post on the social platform X ...

E-mail Newsletter Enter your E-mail address below, and we’ll send you an e-mail regularly with the latest news.

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 ...

It’s surprisingly difficult to prove one of the most basic properties of a number: whether it can be written as a fraction. A broad new method can help settle this ancient question.