In mathematics, the trigonometric functions (also called the circular functions) are functions of an angle. They relate the angles of a triangle to the lengths of its sides. Trigonometric functions are important in the study of triangles and modeling periodic phenomena, among many other applications. The most familiar trigonometric functions are the sine, cosine, and tangent.
a long-term change in the earth's climate, especially a change due to an increase in the average atmospheric temperature: Melting glaciers imply that life in the Arctic is affected by climate change. Origin of climate change Expand.
Definitions Global warming: the increase in Earthâs average surface temperature due to rising levels of greenhouse gases. Climate change: a long-term change in the Earthâs climate, or of a region on Earth.hether referred to as global warming or climate change, the consequences of the widescale changes currently being observed in Earth's climate system could be considerable.