Show that tan^2 teta+tan^4 teta=sec^4 teta_sec^2 teta
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Step-by-step explanation:
L.H.S = tan^2 ∅ + tan^4 ∅
= tan^ 2 ∅(1+tan^2 ∅)
= (sec^2 ∅ - 1)sec^2 ∅
= sec^4 ∅ - sec^2 ∅ = R.H.S
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