Trigonometrical ratio table and unit circle will help us to find the values of trigonometric standard angles. The standard angles of trigonometrical ratios are 0°, 30°45°, 60 ° . Values of table find by unit circle. Table of values of the 6 trigonometric functions sin (x), cos (x), tan(x), cot (x), sec ( x) and csc (x) for special angle values. Hence unit circle used to find value of table.

Unit circle and trigonometric ratio

Unit circle and table