sec4θ-sec2θ=tan4θ+tan2θ
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Step-by-step explanation:
sec4θ-sec2θ=tan4θ+tan2θ
tan4θ+tan2θ= tan^2θ (tan^2θ + 1 )
(sec^2θ-1)(sec2θ) = [ tan^2θ + 1= sec^2θ) =
sec4θ-sec2θ
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