Prove that sec⁴@- sec²@=tan²@+tan⁴@

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1.	Prove that sec⁴@- sec²@=tan²@+tan⁴@
Answer» LHS=sec^[email protected]^[email protected] =sec^[email protected](sec^[email protected]) =((1+tan^[email protected])(1+tan^[email protected]) =tan^[email protected]+tan^[email protected]=RHS Proved

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