The tangent function, along with sine and cosine, is one of the three most common trigonometric functions. In any right triangle, the tangent of an angle is the length of the opposite side (O) divided by the length of the adjacent side (A).
In a formula, it is written simply as ‘tan’.
O = Opposite side
A = Adjacent side
Solved Example of Tangent Formula
Example: Calculate the tangent angle of a right triangle whose adjacent side and opposite side are 8 cm and 6 cm respectively?
Adjacent side (A)= 8 cm
Opposite side (O)= 6 cm
Using the formula of tangent: