Question

Question 4 plz tell me iam goa mark it brainlist .

Answer 1

Step-by-step explanation:

tan²A+tan⁴A

tan²A(1+tan²A)

(sec²A-1)(1+tan²A). (1+tan²A=sec²A)

(sec²A-1)sec²A

sec⁴A-sec²A

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