**How to use :-**Enter one side and second value and press the *Calculate* button:

Trigonometry calculator as a tool for solving right triangle To find the missing sides or angles of the right triangle, all you need to do is enter the known variables into the trigonometry calculator. You need only two given values in the case of: one side and one angle.

sin *A* = opposite / hypotenuse = *a* / *c*

cos *A* = adjacent / hypotenuse = *b* / *c*

tan *A* = opposite / adjacent = *a* / *b*

csc *A* = hypotenuse / opposite = *c* / *a*

sec *A* = hypotenuse / adjacent = *c* / *b*

cot *A* = adjacent / opposite = *b* / *a*