Math, asked by ashimaryal4, 4 months ago

1-sin^4A/cos^4A=2sec^2A-1​

Answers

Answered by Anonymous
4

Answer:

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Step-by-step explanation:

(1 - Sin⁴A) / Cos⁴A

= (1/Cos⁴A) - (Sin⁴A/Cos⁴A)

= Sec⁴A - Tan⁴A

= (Sec²A)² - (Tan²A)²

= (Sec²A + Tan²A) (Sec²A - Tan²A)

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