public void TangentCalculatorTest(double firstValue, double expected)
{
var calculator = new TangentCalculator();
var actualResult = calculator.Calculate(firstValue);
Assert.AreEqual(expected, actualResult, 0.001);
}
public void CosineCalculatorTest()
{
TangentCalculator calculator = new TangentCalculator();
Assert.AreEqual(0, calculator.Calculate(0));
}