Math Homework. Do It Faster, Learn It Better.
Values of Trigonometric Ratios for Common Angles
Trigonometric Functions in Right Triangles
Sine:
The sine of an angle is the trigonometric ratio of the opposite side to the hypotenuse of a right triangle containing that angle.
Cosine:
The cosine of an angle is the trigonometric ratio of the adjacent side to the hypotenuse of a right triangle containing that angle.
Tangent:
The tangent of an angle is the trigonometric ratio between the opposite side and the adjacent side of a right triangle containing that angle.
Trigonometric Values of Standard Angles
The following table gives the values of trigonometric ratios for standard angles.
For more standard values, use the sine , cosine , and tangent pages.