Trigonometry calculator Right triangle calculatorEnter one side and second value and press the Calculate button: Side a:Side b:Side c:Angle A:Angle B:Calculate ResetTrigonometric functions calculatorCalculate ResetResult:Trigonometric functionssin A = opposite / hypotenuse = a / ccos A = adjacent / hypotenuse = b / ctan A = opposite / adjacent = a / bcsc A = hypotenuse / opposite = c / asec A = hypotenuse / adjacent = c / bcot A = adjacent / opposite = b / aSee also.