Prve that tan⁴A + cot²A = sec²A + cosec²A - 2
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your question have a problem . the term 'tan⁴A' will be tan²A. Otherwise it cannot be proved
Step-by-step explanation:
tan²A +cot²A
= sec²A-1+ cosec²A -1
= sec²A - 1 +cosec²A -1
=sec²A + cosec²A - 2
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