To Prove : \small \tt2 {sec}^{2} θ - {sec}^{4} θ - 2 {cosec}^{2} θ + {cosec}^{4} θ = {cot}^{4} - {tan}^{4}2sec2θ−sec4θ−2cosec2θ+cosec4θ=cot4−tan4
\begin{gathered} \\ \\ \end{gathered}
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