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.
global warming or climate change is a subject that shows no sign of cooling down here s the lowdown on why it s happening what s causing it and how it might change the planetprinter friendlyes earth is already showing many signs of worldwide climate change average temperatures have climbed 1 4 degrees fahrenheit 0 8 degree celsius around the world since 1880 much of this in recent decades according to nasa s goddard institute for space studies the rate of warming is increasing