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Sec^4A+ tan^4A = 1 + 2tan^2A sec^2A

please help me solving it​

User Urs
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1 Answer

3 votes

Answer:

true

Explanation:

sec^4A-2tan^2Asec^2A+tan^4A=1

(sec^2A-tan^2A)^2=1

1^2=1

which is true

User JamesRLamar
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