Question

sec⁴ A − sec² A is equal to
(a)tan² A − tan⁴ A
(b)tan⁴ A − tan² A
(c)tan⁴ A + tan² A
(d)tan² A + tan⁴ A​

Answer 1

sec⁴ A − sec² A is equal to

(a)tan² A − tan⁴ A

(b)tan⁴ A − tan² A

(c)tan⁴ A + tan² A✔️

(d)tan² A + tan⁴ A

Answer 2

tan⁴A + tan² A is the answer