Tangent which is also known as the tan is one of the six trigonometric ratios. In a given right triangle, the tangent of an angle is calculated as the opposite side divided by the adjacent side of the given angle. Double angle formulas are the trigonometric functions that have double angles such as sin2x, cos2x, etc. Hence, tan2x is also a double angle function of a tangent. Let's look into the tan2x formula in detail.
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