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04-01-2021
Mathematics

contestada

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

please help me solving it

Respuesta :

06-01-2021

Answer:

true

Step-by-step explanation:

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

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

1^2=1

which is true

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