Sine and Cosine

Sine and cosine are two of the 6 important operations that one can perform on triangles. However, the only type of triangles one can use these two on is right triangles. Right triangles have one angle of 90 degrees, and using sine and cosine, we can find missing sides or angles. Sine and cosine on a calculator are represented by sin and cos. Sine is equal to the opposite side over the hypotenuse, whereas the cosine is equal to the adjacent side over the hypotenuse. Additionally, on a unit circle and also cartesian plane, cosine is equal to the x value, whereas the sine value is equal to the y value. We can use these to substituted x and y values and find specific lengths.