Plss, solve this one.
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Your Solution ⤵⤵
Sec⁴A - tan⁴ A= 1 + 2 tan²A
(sec²A + tan²A)(sec²A -tan²A)
(Sec² A + tan ²A ) [ sec² - tan² =1]
(Sec² A + tan²A)
(1+ tan²A) + tan²A
1 + 2 tan²A
Proved
Hope it helps ⏩⏩
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