### Tangent formula

Tangent = Length of Opposite side / Length of Adjacent side

### Tangent definition

Our free Tangent Calculator calculates the tangent for any side if you just enter in the length of the opposite side and the length of the adjacent side. You can try our free tangent calculator now!

### How to calculate tangent

Sometimes the best tangent calculator is the one that is easy to use and doesn’t require us to even know what the tangent formula is in the first place, if you want to know the exact formula for calculating tangent then please check out the “Formula” box above.