Triangle Angles and Side Calculation Online

Please select the option and enter required values then press calculate button:


Important Formula:

Sin(θ) = Opposite / Hypotenuse

Cos(θ) = Adjacent / Hypotenuse

Tan(θ) = Opposite / Adjacent

Select what (angle / sides) you want to calculate, then enter the values in the respective rows and click calculate.

If you want to calculate hypotenuse enter the values for other sides and angle.