Arithmetica.Tests.MathExpressionFunctionTests.MathExpressionFunction_Cosine C# (CSharp) Method

        public void MathExpressionFunction_Cosine()
        {
            this.Evaluate("cos(4)", -0.653643621);
            this.Evaluate("cos(pi)", -1, epsilon:0.0000000000001);
            this.Evaluate("cos(pi/4)", 0.707106781);
            this.Evaluate("cos(pi/8)", 0.923879533);
        }