The general functions for multiple angle formulas are sine, tangent and cosine. The trigonometric triple-angle identities offer a relationship between the basic trigonometric functions applied to three times an angle, in terms of trigonometric functions of the angle itself.The triple angle identities for sine, cosine and tangent are:sin3θ=3sinθ−4sin3 θcos3θ=4cos3θ−3cosθtan(3θ)= 3tanθ−tan3θ/ 1−3tan2θ