Cos 3A evaluator uses Cos 3A = (4*Cos A^3)-(3*Cos A) to evaluate the Cos 3A, The Cos 3A formula is defined as the trigonometric cosine function of thrice the given angle A. Cos 3A is denoted by cos 3A symbol.
How to evaluate Cos 3A using this online evaluator? To use this online evaluator for Cos 3A, enter Cos A (cos A) and hit the calculate button.