Question

help kardo please thoda sa​

Answer 1

Answer:

B)

Step-by-step explanation:

$\sec^{4} (x) - \sec^{2} (x)$

$= \sec^{2} (x)( \sec^{2} (x) - 1)$

$= (1 + \tan^{2} (x) ) \tan^{2} (x)$

$= \tan^{2} (x) + \tan^{4} (x)$