The Six Trigonometric Functions Calculator

This online calculator calculates the six trigonometric functions: sin(x), cos(x), tan(x), cot(x), sec(x) and csc(x) of a given angle. The angle may be in degrees, radians (decimal form) or radians in fractional form such as 2*Pi/5

http://www.analyzemath.com/Calculators/Trigonometry_Cal.html