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*Power reducing formula calculator uses the power reducing formula to rewrite the expression.*

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.

Power Reduction Identity Calculator

Table of Contents:

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.