96 points here, having to ask same question again - a brother out. verify each trigonometric equation by substituting identities to match the right hand side of the equation to the left hand side of the equation. show your work. 1. cot x sec^4 x = cot x + 2 tan x + tan^3 x 2. (sin x)(tan x cos x - cot x cos x) = 1 - 2 cos^2 x 3. 1 + sec^2 x sin^2 x = sec^2 x 4. ((sin x)/(1-cos x)) + ((sin x)/(1+cos x))=2csc x 5. - tan^2 x + sec^2x = 1