Double angle calculator
Double angle calculator used to calculate Double angle formula which refers to the expression of trigonometric functions of angles equal to 2θ in terms of θ. The double angle identity formula is an equation that expresses a trigonometric function of twice an angle in terms of trigonometric functions of the angle. Double-angle formulas are especially useful in finding the values of unknown trigonometric functions.
Double angle formula
sin(2θ) = 2 x sinθ x cosθ
cos(2θ) = 1 - 2sin2θ
tan(2θ) = 2 x tanθ / 1 - tan2θ