The unit circle is a circle with radius 1, usually drawn within the coordinate aircraft with its heart on the origin. It’s a elementary idea in trigonometry and is used to outline the trigonometric capabilities sine, cosine, and tangent. There are a number of strategies for remembering the unit circle, which will be useful for college students 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 will help you to recollect the definitions of the trigonometric capabilities and the way they relate to the unit circle.