Math, asked by arushirajak84, 1 day ago

sec⁴A - tan⁴A = sec²A + tan²A

Answers

Answered by sandy1816

1

Answer:

(sec⁴A-tan⁴A)

=(sec²A)²-(tan²A)²

=(sec²A-tan²A)(sec²A+tan²A)

=sec²A+tan²A

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