Home/Calculus II/Trigonometric integrals/Double-angle and power-reduction identitiesSection 6.2Double-angle and power-reduction identitiesFormulaCopy LaTeXsin(2x)=2sinxcosx\sin(2x)=2\sin x\cos xsin(2x)=2sinxcosxView detail →FormulaCopy LaTeXsin2x=1−cos(2x)2\sin^2x=\frac{1-\cos(2x)}{2}sin2x=21−cos(2x)View detail →FormulaCopy LaTeXcos2x=1+cos(2x)2\cos^2x=\frac{1+\cos(2x)}{2}cos2x=21+cos(2x)View detail →FormulaCopy LaTeXsinxcosx=12sin(2x)\sin x\cos x=\frac{1}{2}\sin(2x)sinxcosx=21sin(2x)View detail →
FormulaCopy LaTeXsinxcosx=12sin(2x)\sin x\cos x=\frac{1}{2}\sin(2x)sinxcosx=21sin(2x)View detail →