Trigonometry Power Reduction Identity Calculator
The power reduction formulas are obtained by solving the second and third versions of the cosine double-angle and half-angle formulas. In power reduction formulas, a trigonometric function is raised to a power (such as sin^{2}α or cos ^{2} α). The use of a power reduction formula expresses the quantity without the exponent. Here, sin^{2}α or cos ^{2} α = 1.
Formula
sin^{2}θ = [1 - cos(2θ) ] / 2
cos^{2}θ = [1 + cos(2θ) ] / 2
tan^{2}θ = [1 - cos(2θ) ] / [1 + cos(2θ) ]
This advanced online Trigonometry Power Reduction Identity Calculator is ued to calculate the trigonometric functions using power reduction formulas.