The tan2x formula has two possible expressions. It can be stated solely in terms of the tangent function or as a sine and cosine function combination. The following is the formula for tan2x identity.Trigonometric functions like tan2x have a formula that can be utilized to solve a variety of trigonometric problems. Tan2x is a crucial trigonometric formula for double angles, or angles that have been doubled. It can also be stated as a ratio of sin2x to cos2x, or in terms of tan x. We can write tan2x as the reciprocal of cot 2x, or tan2x = 1/cot2x, as the reciprocal of tan x is cot x. Let’s look at the tan2x equation: