Double Angle Formula, A formula in trigonometry that expresses a function of a double angle in terms of the single angle.

Double Angle Formula, Quick Reference. (in trigonometry). Double angle formulas are used to express the trigonometric ratios of double angles (2θ) in terms of trigonometric ratios of single angle (θ). . A formula in trigonometry that expresses a function of a double angle in terms of the single angle. double-angle formula. 4h3v, rh2ey, ekfc7, ye2h, xkr, 8wuz, vx8, hqb, t6h5, 7jeau,