Prove that:
Sec⁴A- tan⁴A = 1 + 2 tan²A
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2. Prakshi4270. Helping Hand. 4 answers. 92 people helped. Answer: Step-by-step explanation: LHS: Sec^4A-tan^4A=1+2tan^2A. (Sec^2A+tan^2A)(sec^2A-tan^ 2A). · या पानाचे भाषांतर करा
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