The unit circle is a circle with radius 1, usually drawn within the coordinate aircraft with its heart on the origin. It’s a basic idea in trigonometry and is used to outline the trigonometric features sine, cosine, and tangent. There are a number of methods for remembering the unit circle, which could be useful for college kids and professionals in arithmetic and associated fields.
One widespread methodology is to make use of the acronym SOHCAHTOA, which stands for sine is reverse over hypotenuse, cosine is adjoining over hypotenuse, and tangent is reverse over adjoining. This may also help you to recollect the definitions of the trigonometric features and the way they relate to the unit circle.